Assertion: dolphin | /r/HasAspect | fin
Facets:
value: very rarely
type: DEGREE
Source sentences:
text: Instead of having arms and legs like land mammals, dolphins have fins.
text: A dolphin usually has one baby at a time and very rarely have twins.
text: Dolphins have two fins, one on each side, called the pectoral fins.
text: Most dolphins have two arms like fins, a fin on the back, and a tail that split into two flukes.