and Charlie and Chris go on a bat-finding mission using a special bat detector, which allows you to hear the ultra-sonic sounds made by the bats.
(Charlie and Chris; go; on a bat-finding mission) (the ultra-sonic sounds; made; by the bats) (a special bat detector; allows; you to hear the ultra-sonic sounds) Context(a special bat detector allows,List([56, 92))):(you; to hear; the ultra-sonic sounds made by the bats)
a special bat detector allows,List([56, 92))
Charlie and Chris the ultra-sonic sounds a special bat detector you
go made allows to hear
on a bat-finding mission
by the bats
you to hear the ultra-sonic sounds
the ultra-sonic sounds made by the bats