Assertion: whale's fin | /r/HasAspect | dorsal fin
Facets:
value: in the middle of the back
type: LOCATION
Source sentences:
text: No dorsal fin, but an elongated dorsal ridge (anatomical) - Most whales have a dorsal fin (in the middle of the back) which helps them maintain a steady line when swimming, belugas don't have this fin, but instead have a hardened long dorsal ridge.