Assertion: river dolphin's fin | /r/HasProperty | low
Facets:
value: in shape
type: OTHER
Source sentences:
text: The dorsal fin of the baiji is low and triangular and the flippers are broad and rounded.
text: Its dorsal fin is low and triangular in shape and resembles a light-colored flag when the dolphin swims just below the surface of the murky Yangtze River, hence the name "white-flag" dolphin.