Assertion: echinoderm's mouth | /r/AtLocation | the bottom of its body
Facets:
value: as with sea stars
type: LOCATION
Source sentences:
text: The mouth of the sand dollar is located on the bottom of its body at the center of the petal-like pattern.
text: As with sea stars and brittle stars, the mouths of urchins and sand dollars are located on the bottom of the body.