Assertion: fin whale's tail | /r/HasProperty | adapted to propelling the animal
Facets:
value: well
type: MANNER
value: through water
type: MANNER
Source sentences:
text: Studies of the tail, thanks to specimens recovered and analyzed by Ibrahim, Pierce, Lauder, and Sereno and colleagues in 2018 indicate that Spinosaurus had a keeled tail that was well adapted to propelling the animal through water.