Assertion: chimpanzee's environment | /r/HasProperty | manipulable
Facets:
value: freely
type: MANNER
Source sentences:
text: Self-stimulation seems to be an exaggerated coping mechanism to combat boredom because "the chimpanzee's body and its products are among the very few objects in the restricted environment that are freely manipulable and subject to alteration" (Walsh et al., 1982).