Assertion: dolphin's pair | /r/CapableOf | dolphin use
Facets:
value: for breathing
type: PURPOSE
Source sentences:
text: The single blowhole on top of their head has a flap that opens to reveal a pair of nostrils, which dolphins use for breathing when they surface.
text: The single blowhole on top of their head has a flap that opens to reveal a pair of nostrils, which dolphins use for breathing when they surface.