Assertion: diver's suit | /r/CapableOf | prevent the diver
Facets:
value: from reaching control valves
type: TRANSITIVE-OBJECT
value: in extreme cases
type: TEMPORAL
Source sentences:
text: Head-up vertical posture was the normal position, and any change from this would require some adjustment of back-pressure to prevent excessive air volume in the suit, which in extreme cases could prevent the diver from reaching control valves, and could lead to a runaway buoyant ascent.