Assertion: basking shark's fin | /r/HasProperty | tail
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: A caudal fin (tail) that propels the shark forward
text: This shark species has two dorsal fins and a large dual fin formerly known as its tail!
text: A pair of pectoral fins, a pair of pelvic fins, one or two dorsal fins, an anal fin and a caudal fin (tail).