Assertion: mouthpiece | /r/HasProperty | essential
Facets:
value: to the formation of speech
type: TRANSITIVE-OBJECT
value: in humans
type: OTHER
value: for speech
type: PURPOSE
Source sentences:
text: The mouth is essential for speech.
text: In addition to its primary role in the intake and initial digestion of food, the mouth and its structures are essential in humans to the formation of speech.