Assertion: yawning | /r/HasProperty | taken as sign
Facets:
value: before bed
type: TEMPORAL
Source sentences:
text: Yawning, in general, may simply be a way for the body to change the state of awareness it is in: Before bed : yawning could be taken as a sign that the body is preparing for sleep.
text: : yawning could be taken as a sign that the body is preparing for sleep.