Assertion: skate's fin | /r/HasProperty | wing-like pectoral
Facets:
value: wing
type: OTHER
Source sentences:
text: Skates are a type of cartilaginous fish—fishes with skeletons made of cartilage, rather than bone—that are characterized by flat bodies and wing-like pectoral fins attached to their heads.
text: While many fish propel themselves by flexing their bodies and using their tails, skates move by flapping their wing-like pectoral fins.