Assertion: dolphin's nature | /r/HasProperty | playful
Facets:
Source sentences:
text: Dolphins have a playful and friendly nature, which makes them very popular with humans.
text: Dolphins are well-known for their playful nature and also demonstrate teaching-skills, innovation, joy, and grief.
text: Like other oceanic dolphins, dusky dolphins have an excellent sense of vision and have a playful nature.