Feathers keep birds warm, camouflage them from predators, allow them to fly, and attract mates.
(Feathers; keep; birds) (Feathers; camouflage; them; from predators) (them; attract; mates) (Feathers; allow; them to fly) Context(Feathers allow,List([0, 63))):(them; to fly; )
Feathers allow,List([0, 63))
Feathers Feathers them Feathers them
keep camouflage attract allow to fly
birds
them from predators
mates
them to fly