In the winter they need ice-free water in order to find enough food to survive.
(they; need; ice-free water; in order; L:In the winter) Context(they need,List([14, 23))):(they; need ice-free water to find; enough food to survive)
they need,List([14, 23))
they they
need need ice-free water to find
ice-free water in order L:In the winter
enough food to survive