Assertion: gibbon's arm | /r/CapableOf | hold above their heads
Facets:
value: for balance
type: PURPOSE
Source sentences:
text: When they’re on the ground, gibbons walk on their legs, often with their long arms held above their heads for balance.
text: When they’re on the ground, gibbons walk on their legs, often with their long arms held above their heads for balance.
text: When they’re on the ground, gibbons walk on their legs, often with their long arms held above their heads for balance.