Assertion: dolphin | /r/HasAspect | blowhole
Facets:
value: on top of their heads
type: LOCATION
Source sentences:
text: Dolphins have a blowhole and they need to surface to get air.
text: They have one blowhole, which distinguishes them from baleen whales, which have a pair of blowholes.
text: They also have a blowhole on the top of their head that they use for breathing.
text: Dolphins have a blowhole, a respiratory organ through which they breathe.
text: Dolphins have a blowhole on top of their heads and to breathe they must jump out of the water.
text: While all dolphins have one blowhole, baleen whales — those that feed on plankton and small fish or crustaceans — have two blowholes.