[
 [
  "rel-amazon",
  "review-rating"
 ],
 [
  "rel-avito",
  "searchinfo-isuserloggedon"
 ],
 [
  "rel-avito",
  "searchstream-click"
 ],
 [
  "rel-event",
  "event_interest-interested"
 ],
 [
  "rel-event",
  "event_interest-not_interested"
 ],
 [
  "rel-event",
  "users-birthyear"
 ],
 [
  "rel-f1",
  "qualifying-position"
 ],
 [
  "rel-f1",
  "results-position"
 ],
 [
  "rel-hm",
  "transactions-price"
 ],
 [
  "rel-trial",
  "eligibilities-adult"
 ],
 [
  "rel-trial",
  "eligibilities-child"
 ],
 [
  "rel-trial",
  "studies-enrollment"
 ],
 [
  "rel-trial",
  "studies-has_dmc"
 ]
]