Assertion: yawning | /r/RelatedTo | fatigue
Facets:
value: usually
type: DEGREE
value: sometimes
type: TEMPORAL
Source sentences:
text: Yawning is sometimes associated with fatigue, and given that you’re more likely to feel drowsy in warm temperatures, the links appeared to make sense.
text: Yawning and cortisol is associated with fatigue .
text: Yawning and cortisol has been associated with fatigue  and the Thompson Cortisol Hypothesis was proposed to account for how yawning is triggered by threshold levels of cortisol in order to promote brain cooling .
text: Usually, yawning is associated with boredom, fatigue, and tiredness.