Assertion: porpoise's fin | /r/HasProperty | located
Facets:
value: behind the center of the body
type: LOCATION
value: slightly
type: DEGREE
Source sentences:
text: Their low, wide dorsal fin is triangular in shape and located slightly behind the center of their body.
text: Its flippers are small, oval and rounded at the tips, and its dorsal fin is wide-based, low and triangular in shape and located just behind the center of the body.