When bats hunt at night, they use sonar, or sound waves, to find their prey.
(bats; hunt; T:at night) (they; use; sonar; to find their prey; T:When bats hunt at night) Context(they use,List([25, 33))):(they; use sonar to find; their prey)
they use,List([25, 33))
bats they they
hunt use use sonar to find
T:at night
sonar to find their prey T:When bats hunt at night
their prey