Assertion: killer whale | /r/HasAspect | dorsal fins
Facets:
value: on their back
type: LOCATION
Source sentences:
text: For some time, there's been a heated debate about why killer whales in captivity have dorsal fins that are flopped over or collapsed.
text: Scientists are not certain why orcas have dorsal fins or what purpose the appendages serve.
text: All killer whales have a dorsal fin on their back, but the male's dorsal fin is much taller than a female's and can grow up to 6 feet tall.﻿﻿
text: All killer whales have dorsal fins, but the males is larger than females, sometimes reaching 6 feet tall.