Assertion: chimpanzee | /r/CapableOf | help human strangers
Facets:
value: at personal cost
type: MANNER
value: without apparent expectation of personal gain
type: MANNER
Source sentences:
text: For instance, he noted, chimps have shown they can help unrelated chimps and human strangers at personal cost without apparent expectation of personal gain, a level of selfless behavior often claimed as unique to humans.