Assertion: yawning | /r/HasProperty | ancient rite
Facets:
value: throughout the animal kingdom
type: OTHER
Source sentences:
text: Yawning is an ancient rite throughout the animal kingdom—but only human beings and their closest relatives exhibit contagious yawning; simply looking at a picture of a yawning face or reading about yawning can provoke a yawn.
text: Yawning is an ancient evolutionary behavior, but it’s unclear why we do it, according to Dr. Orrin Devinsky, a professor in the departments of neurology, neurosurgery and psychiatry at NYU Langone Medical Center.