Assertion: contagious yawning | /r/HasProperty | phenomena
Facets:
Source sentences:
text: Contagious yawning is a phenomena only found in animals who hold strong social bonds such as dogs, humans, and primates such as apes and baboons.
text: Contagious yawning is a phenomenon that only occurs in humans and chimpanzees as a response to hearing, seeing, or even thinking about yawning.