These bats employ high-frequency sound waves to locate their insect prey, a biological example of &#145;sonar&#146;.
(These bats; employ; high-frequency sound waves; to locate their insect prey) Context(These bats employ,List([0, 17))):(These bats; employ high-frequency sound waves to locate; their insect prey)
These bats employ,List([0, 17))
These bats These bats
employ employ high-frequency sound waves to locate
high-frequency sound waves to locate their insect prey
their insect prey