Assertion: manta ray's surface | /r/HasProperty | ventral
Facets:
Source sentences:
text: Manta rays have triangular pectoral fins, broad heads, and gill slits on their ventral surfaces.
text: They have horizontally flattened bodies with eyes on the sides of their heads behind the cephalic fins, and gill slits on their ventral surfaces.
text: They have horizontally flattened bodies with eyes on the sides of their heads behind the cephalic fins, and gill slits on their ventral surfaces.