Assertion: gibbon's arm | /r/CapableOf | wave up for balance
Facets:
value: from chest
type: LOCATION
Source sentences:
text: When distances between trees are too great, sifakas will descend to the ground and cross distances more than 100 m (330 ft) by standing upright and hopping sideways with the arms held to the side and waving up and down from chest to head height, presumably for balance.