Penguins have a thick layer of blubber that helps them keep warm, and their feathers are very tightly packed to make another cover.
(Penguins; have; a thick layer of blubber that helps them keep warm) (their feathers; are very tightly; packed to make another cover) (their feathers; to make; another cover) (a thick layer of blubber; helps; them keep warm) Context(a thick layer of blubber helps,List([14, 49))):(them; keep; warm)
a thick layer of blubber helps,List([14, 49))
Penguins their feathers their feathers a thick layer of blubber them
have are very tightly to make helps keep
a thick layer of blubber that helps them keep warm
packed to make another cover
another cover
them keep warm
warm