Assertion: gill | /r/HasProperty | protected by operculum
Facets:
Source sentences:
text: They have a bony skeleton, are generally laterally flattened, have five pairs of gills protected by an operculum, and a mouth at or near the tip of the snout.
text: They have a bony skeleton, are generally laterally flattened, have five pairs of gills protected by an operculum, and a mouth at or near the tip of the snout.