Assertion: chimpanzee | /r/CapableOf | use sign language
Facets:
value: to convey a message
type: PURPOSE
Source sentences:
text: Chimps can use sign language to convey a message.
text: Chimpanzees can use sign language to convey a message.
text: They have been able to learn and express words using the sign language and the use of geometric symbols (lexigrams) using a computer.