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<task name="handover">
  <description>Hand the three items across the central partition: the arm on the item side picks up each object and passes it to the other arm in mid-air above the partition, and the receiving arm places it into the container on its own side. Success condition: All three items are passed arm-to-arm across the partition and end up in the container.</description>
  <task_objects>
    <object>popcorn cup</object>
    <object>block</object>
    <object>black cylindrical block</object>
    <object>receiving container</object>
    <object>central partition</object>
  </task_objects>
  <substages>
    <substage>1. move passer arm to an item on the object side</substage>
    <substage>2. grasp the item</substage>
    <substage>3. lift the item into mid-air above the barrier</substage>
    <substage>4. move receiver arm across to the held item</substage>
    <substage>5. grasp the item with the receiver arm</substage>
    <substage>6. release the item from the passer arm</substage>
    <substage>7. move the item above the receptacle on the receiver side</substage>
    <substage>8. release the item into the receptacle</substage>
    <substage>9. repeat for all three items</substage>
  </substages>
  <predicates>
    <predicate>grasped</predicate>
    <predicate>contact</predicate>
    <predicate>near</predicate>
    <predicate>aligned_with</predicate>
    <predicate>inside</predicate>
    <predicate>on_top_of</predicate>
    <predicate>supports</predicate>
    <predicate>separated_from</predicate>
    <predicate>left_of</predicate>
    <predicate>right_of</predicate>
    <predicate>above</predicate>
    <predicate>below</predicate>
    <predicate>in_front_of</predicate>
    <predicate>behind</predicate>
    <predicate>open</predicate>
    <predicate>closed</predicate>
    <predicate>inserted_into</predicate>
    <predicate>stable</predicate>
  </predicates>
</task>