Seals, walruses and sea cows have fur and blubber, a thick layer of fat, to keep them warm.
(Seals, walruses and sea cows; have; fur and blubber) Context(Seals , walruses and sea cows have,List([0, 33))):(Seals, walruses and sea cows; have fur and blubber to keep; them)
Seals , walruses and sea cows have,List([0, 33))
Seals, walruses and sea cows Seals, walruses and sea cows
have have fur and blubber to keep
fur and blubber
them