Assertion: bonobo's group | /r/CapableOf | vocalize the intruder
Facets:
value: loudly
type: MANNER
Source sentences:
text: In some cases, they exhibit mobbing behavior in which the entire group flocks to an intruder, loudly vocalizing and attacking the intruder until it retreats; other times, they remain frozen until the threat has passed (Soini 1988; Kinzey 1997).