Assertion: gorilla | /r/CapableOf | stand upright
Facets:
value: in special circumstances
type: CAUSE
Source sentences:
text: Though gorillas can stand upright, they prefer traveling on all fours, pushing themselves forward with their knuckles and soles of their feet.
text: They can stand upright, but they don’t do it very often.
text: In special circumstances, the gorilla can stand upright and hit the breast with its shoulders.