Assertion: sea otter's predator | /r/HasProperty | human
Facets:
Source sentences:
text: only marine predators are humans, great white sharks, and killer whales.
text: The main predators of seals are killer whales, polar bears, leopard seals, large sharks, and human beings.
text: only marine predators are humans, killer whales and great white sharks.
text: The main predators of the sea urchin are crabs, large fish, sea otters, eels, birds and humans.