Assertion: diver | /r/CapableOf | maintain seal
Facets:
value: with the lips
type: MANNER
value: around it
type: LOCATION
Source sentences:
text: In the case of a full-face mask, the diver may usually breathe through the nose or mouth as preferred, and in the case of a mouth held demand valve, the diver will have to hold the mouthpiece between the teeth and maintain a seal around it with the lips.