"Flowers give nectar, and in exchange the butterflies help plants reproduce by carrying pollen from one plant to another."
(Flowers; give; nectar) (the butterflies; help; plants reproduce by carrying pollen from one plant to another; L:in exchange) Context(the butterflies help,List([38, 58))):(plants; reproduce; )
the butterflies help,List([38, 58))
Flowers the butterflies plants
give help reproduce
nectar
plants reproduce by carrying pollen from one plant to another L:in exchange