Assertion: mountain gorilla's arm | /r/CapableOf | walk on all the four limbs
Facets:
value: at the same time
type: TEMPORAL
Source sentences:
text: Gorillas have arms that are lengthier than their legs and walk on all the four limbs at the same time; this type of movement is known as knuckle walking; knuckles help them to be able to carry their head and the upper parts of their bodies.