Assertion: chimpanzee's behavior | /r/HasProperty | accompanied
Facets:
value: usually
type: DEGREE
Source sentences:
text: Ethologist Jonathan Balcombe stated that female bonobos rub their clitorises together rapidly for ten to twenty seconds, and this behavior, "which may be repeated in rapid succession, is usually accompanied by grinding, shrieking, and clitoral engorgement"; he added that it is estimated that they engage in this practice "about once every two hours" on average.