Assertion: dolphin's behavior | /r/HasProperty | playful
Facets:
value: in the courtship ritual
type: TEMPORAL
Source sentences:
text: Dolphins exhibit playful behavior including riding waves, jumping up and out of the water, play fighting and also interacting with swimming humans.
text: Biologists also theorize this behavior might be playfulness in the courtship ritual.
text: Known for their playful behavior, dolphins are highly intelligent.