Assertion: sea urchin | /r/CapableOf | use their strong mouths
Facets:
Source sentences:
text: They feed on seaweed on the ocean floor using their strong mouths located on their undersides.
text: They feed on seaweed on the ocean floor using their strong mouths located on their undersides.
text: They feed on seaweed on the ocean floor using their strong mouths located on their undersides.