#yawn__yawning  an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
  supertype:  unconditioned_reflex__unconditionedreflex__reflex__instinctive_reflex__instinctivereflex__innate_reflex__inborn_reflex__physiological_reaction__physiologicalreaction  an automatic instinctive unlearned reaction to a stimulus
  subtype:  pandiculation  yawning and stretching (as when first waking up)

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