Assertion: blue whale | /r/AtLocation | the surface
Facets:
value: to breathe
type: PURPOSE
Source sentences:
text: Although blue whales are mid-water hunters, they must come to the surface to breathe.
text: Blue whales breathe air and so have to go to the surface to breathe.
text: About every 10 to 20 minutes, it must come to the surface to breathe.