Assertion: mollusk's gill | /r/HasProperty | serviced by large blood vessels
Facets:
value: each with its own heart
type: OTHER
Source sentences:
text: Gills (ctenidia) are attached to the wall of the mantle cavity and are serviced by large blood vessels, each with its own heart.
text: Gills (ctenidia) are attached to the wall of the mantle cavity and are serviced by large blood vessels, each with its own heart.