Assertion: modern whale | /r/CapableOf | use echolocation
Facets:
value: effectively
type: MANNER
Source sentences:
text: Basilosauirds were as large as modern-day whales, but lacked certain characteristics such as the melon organ which allows modern whales to use echolocation effectively, and they had small brains which suggests that they may have been solitary creatures and not as social as modern whales are.