In the winter, a tundra wolves fur gets so thick that they can swim a river and ther skin will stay dry.
(a tundra wolves fur; gets; so thick that they can swim a river and ther skin will stay dry; L:In the winter) (they; can swim; a river and ther skin will stay dry) Context(they can swim,List([54, 67))):(a river and ther skin; will stay; dry)
they can swim,List([54, 67))
a tundra wolves fur they a river and ther skin
gets can swim will stay
so thick that they can swim a river and ther skin will stay dry L:In the winter
a river and ther skin will stay dry
dry