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planets in the solar system orbit the sun & gravity causes orbits -> <mask> causes planets in the solar system to orbit the sun
gravity
planets in the solar system orbit the sun & gravity causes orbits -> gravity <mask> planets in the solar system to orbit the sun
causes
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes <mask> in the solar system to orbit the sun
planets
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar <mask> to orbit the sun
system
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar system to <mask> the sun
orbit
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar system to orbit the <mask>
sun
planets in the solar system orbit the sun & gravity causes orbits -> <mask> causes planets in the solar system to orbit the sun
gravity
planets in the solar system orbit the sun & gravity causes orbits -> gravity <mask> planets in the solar system to orbit the sun
causes
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes <mask> in the solar system to orbit the sun
planets
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar <mask> to orbit the sun
system
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar system to <mask> the sun
orbit
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes planets in the solar system to orbit the <mask>
sun
gravity causes orbits & the moon orbits the earth -> <mask> causes the moon to orbit around the earth
gravity
gravity causes orbits & the moon orbits the earth -> gravity <mask> the moon to orbit around the earth
causes
gravity causes orbits & the moon orbits the earth -> gravity causes the <mask> to orbit around the earth
moon
gravity causes orbits & the moon orbits the earth -> gravity causes the moon to <mask> around the earth
orbit
gravity causes orbits & the moon orbits the earth -> gravity causes the moon to orbit around the <mask>
earth
planets in the solar system orbit the sun & gravity causes orbits -> <mask> causes the planets in the solar system to orbit the sun
gravity
planets in the solar system orbit the sun & gravity causes orbits -> gravity <mask> the planets in the solar system to orbit the sun
causes
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes the <mask> in the solar system to orbit the sun
planets
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes the planets in the solar <mask> to orbit the sun
system
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes the planets in the solar system to <mask> the sun
orbit
planets in the solar system orbit the sun & gravity causes orbits -> gravity causes the planets in the solar system to orbit the <mask>
sun
uranus is located in the solar system & uranus is a kind of planet -> <mask> is a planet located in the solar system
uranus
uranus is located in the solar system & uranus is a kind of planet -> uranus is a <mask> located in the solar system
planet
uranus is located in the solar system & uranus is a kind of planet -> uranus is a planet <mask> in the solar system
located
uranus is located in the solar system & uranus is a kind of planet -> uranus is a planet located in the solar <mask>
system
uranus is a planet located in the solar system & planets in the solar system orbit the sun -> <mask> is a planet in the solar system that orbits around the sun
uranus
uranus is a planet located in the solar system & planets in the solar system orbit the sun -> uranus is a <mask> in the solar system that orbits around the sun
planet
uranus is a planet located in the solar system & planets in the solar system orbit the sun -> uranus is a planet in the solar <mask> that orbits around the sun
system
uranus is a planet located in the solar system & planets in the solar system orbit the sun -> uranus is a planet in the solar system that <mask> around the sun
orbits
uranus is a planet located in the solar system & planets in the solar system orbit the sun -> uranus is a planet in the solar system that orbits around the <mask>
sun
uranus is a planet in the solar system that orbits around the sun & gravity causes orbits -> <mask> causes uranus to orbit around the sun
gravity
uranus is a planet in the solar system that orbits around the sun & gravity causes orbits -> gravity <mask> uranus to orbit around the sun
causes
uranus is a planet in the solar system that orbits around the sun & gravity causes orbits -> gravity causes <mask> to orbit around the sun
uranus
uranus is a planet in the solar system that orbits around the sun & gravity causes orbits -> gravity causes uranus to <mask> around the sun
orbit
uranus is a planet in the solar system that orbits around the sun & gravity causes orbits -> gravity causes uranus to orbit around the <mask>
sun
the moon orbiting the earth occurs once per month & the moon 's orbit is elliptical -> the <mask> orbits the earth in an elliptical orbit once per month
moon
the moon orbiting the earth occurs once per month & the moon 's orbit is elliptical -> the moon <mask> the earth in an elliptical orbit once per month
orbits
the moon orbiting the earth occurs once per month & the moon 's orbit is elliptical -> the moon orbits the <mask> in an elliptical orbit once per month
earth
the moon orbiting the earth occurs once per month & the moon 's orbit is elliptical -> the moon orbits the earth in an elliptical <mask> once per month
orbit
the moon orbiting the earth occurs once per month & the moon 's orbit is elliptical -> the moon orbits the earth in an elliptical orbit once per <mask>
month
planetary orbits are mostly elliptical & planets in the solar system orbit the sun -> <mask> in the solar system orbit the sun in an elliptical orbit
planets
planetary orbits are mostly elliptical & planets in the solar system orbit the sun -> planets in the solar <mask> orbit the sun in an elliptical orbit
system
planetary orbits are mostly elliptical & planets in the solar system orbit the sun -> planets in the solar system <mask> the sun in an elliptical orbit
orbit
planetary orbits are mostly elliptical & planets in the solar system orbit the sun -> planets in the solar system orbit the <mask> in an elliptical orbit
sun
planetary orbits are mostly elliptical & planets in the solar system orbit the sun -> planets in the solar system orbit the sun in an elliptical <mask>
orbit
a planet is a kind of celestial object / body & earth is a kind of planet -> <mask> is a kind of celestial object
earth
a planet is a kind of celestial object / body & earth is a kind of planet -> earth is a <mask> of celestial object
kind
a planet is a kind of celestial object / body & earth is a kind of planet -> earth is a kind of celestial <mask>
object
earth is a kind of celestial object & as distance from an object decreases , that object will appear larger & a star is a kind of celestial object / celestial body -> as the <mask> from a star to earth decreases, the star will appear larger
distance
earth is a kind of celestial object & as distance from an object decreases , that object will appear larger & a star is a kind of celestial object / celestial body -> as the distance from a <mask> to earth decreases, the star will appear larger
star
earth is a kind of celestial object & as distance from an object decreases , that object will appear larger & a star is a kind of celestial object / celestial body -> as the distance from a star to <mask> decreases, the star will appear larger
earth
earth is a kind of celestial object & as distance from an object decreases , that object will appear larger & a star is a kind of celestial object / celestial body -> as the distance from a star to earth decreases, the <mask> will appear larger
star
earth is a kind of celestial object & as distance from an object decreases , that object will appear larger & a star is a kind of celestial object / celestial body -> as the distance from a star to earth decreases, the star will <mask> larger
appear
as the distance from a star to earth decreases, the star will appear larger & the sun is the star that is closest to earth -> the <mask> will appear larger than other stars because it is the closest star to earth
sun
as the distance from a star to earth decreases, the star will appear larger & the sun is the star that is closest to earth -> the sun will <mask> larger than other stars because it is the closest star to earth
appear
as the distance from a star to earth decreases, the star will appear larger & the sun is the star that is closest to earth -> the sun will appear larger than other <mask> because it is the closest star to earth
stars
as the distance from a star to earth decreases, the star will appear larger & the sun is the star that is closest to earth -> the sun will appear larger than other stars because it is the closest <mask> to earth
star
as the distance from a star to earth decreases, the star will appear larger & the sun is the star that is closest to earth -> the sun will appear larger than other stars because it is the closest star to <mask>
earth
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> <mask> food can be used for preserving food for extended flights
dehydrating
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating <mask> can be used for preserving food for extended flights
food
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating food can be <mask> for preserving food for extended flights
used
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating food can be used for <mask> food for extended flights
preserving
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating food can be used for preserving <mask> for extended flights
food
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating food can be used for preserving food for <mask> flights
extended
dehydrating food is used for preserving food & astronauts require preserved food for extended flights -> dehydrating food can be used for preserving food for extended <mask>
flights
a space probe can orbit / land on other planets & mars is a kind of planet -> a <mask> probe can land on mars
space
a space probe can orbit / land on other planets & mars is a kind of planet -> a space <mask> can land on mars
probe
a space probe can orbit / land on other planets & mars is a kind of planet -> a space probe can <mask> on mars
land
a space probe can orbit / land on other planets & mars is a kind of planet -> a space probe can land on <mask>
mars
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a <mask> probe can land on mars and collect and analyze samples
space
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space <mask> can land on mars and collect and analyze samples
probe
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space probe can <mask> on mars and collect and analyze samples
land
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space probe can land on <mask> and collect and analyze samples
mars
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space probe can land on mars and <mask> and analyze samples
collect
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space probe can land on mars and collect and <mask> samples
analyze
a space probe can land on mars & a space probe is used for collecting / analyzing materials / samples / information -> a space probe can land on mars and collect and analyze <mask>
samples
a space probe can land on mars and collect and analyze samples & the viking i lander was sent to mars and analyze atmospheric gases and soil samples -> the <mask> i lander is a kind of space probe
viking
a space probe can land on mars and collect and analyze samples & the viking i lander was sent to mars and analyze atmospheric gases and soil samples -> the viking i <mask> is a kind of space probe
lander
a space probe can land on mars and collect and analyze samples & the viking i lander was sent to mars and analyze atmospheric gases and soil samples -> the viking i lander is a <mask> of space probe
kind
a space probe can land on mars and collect and analyze samples & the viking i lander was sent to mars and analyze atmospheric gases and soil samples -> the viking i lander is a kind of <mask> probe
space
a space probe can land on mars and collect and analyze samples & the viking i lander was sent to mars and analyze atmospheric gases and soil samples -> the viking i lander is a kind of space <mask>
probe
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> <mask> tide and low tide in the tide cycle occur twice per day
high
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high <mask> and low tide in the tide cycle occur twice per day
tide
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and <mask> tide in the tide cycle occur twice per day
low
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and low <mask> in the tide cycle occur twice per day
tide
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and low tide in the <mask> cycle occur twice per day
tide
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and low tide in the tide <mask> occur twice per day
cycle
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and low tide in the tide cycle <mask> twice per day
occur
high tide is a stage in the tide cycle process & low tide is a stage in the tide cycle process & the tide cycle occurs regularly twice per day -> high tide and low tide in the tide cycle occur twice per <mask>
day
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> <mask> tide and low tide in the tidy cycle are the natural event that occur twice per day
high
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high <mask> and low tide in the tidy cycle are the natural event that occur twice per day
tide
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and <mask> tide in the tidy cycle are the natural event that occur twice per day
low
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low <mask> in the tidy cycle are the natural event that occur twice per day
tide
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low tide in the <mask> cycle are the natural event that occur twice per day
tidy
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low tide in the tidy <mask> are the natural event that occur twice per day
cycle
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low tide in the tidy cycle are the <mask> event that occur twice per day
natural
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low tide in the tidy cycle are the natural <mask> that occur twice per day
event
high tide and low tide in the tide cycle occur twice per day & a tide is a kind of natural event -> high tide and low tide in the tidy cycle are the natural event that <mask> twice per day
occur