Assertion: yawning | /r/CreatedBy | sleepiness
Facets:
value: according to definition
type: OTHER
Source sentences:
text: Most yawning is caused by sleepiness or extreme boredom.
text: Yawns can be caused by boredom or sleepiness.
text: According to definition, yawning is caused by sleepiness or boredom, but I do not think that patients who are undergoing needle sticks, angiography, or barium enemas are ever bored, and their premedication probably does not make them sleepy.