Assertion: humpback whale's behavior | /r/CapableOf | slap their heads
Facets:
value: on the surface of the water
type: LOCATION
value: on physical contact with other males
type: TRANSITIVE-OBJECT
Source sentences:
text: Competitive behaviors include blowing various kinds of bubbles underwater, slapping their heads or tails on the surface of the water and even physical contact with other males.