Assertion: dolphin's adaptation | /r/CapableOf | create echo resonance
Facets:
value: to help pinpoint speeds
type: PURPOSE
value: to help pinpoint distances
type: PURPOSE
Source sentences:
text: The melon-like shape of a dolphin's head serves the same function as that of the large sinus cavities in whales' skulls: these adaptations create echo resonance to help pinpoint distances, speeds, and angles with greater precision.