Assertion: chimpanzee | /r/CapableOf | use sign
Facets:
value: to refer to natural language categories
type: PURPOSE
Source sentences:
text: They can learn a language – sign language and they can use the signs.
text: This test demonstrated 1) "that the chimpanzee subjects could communicate information under conditions in which the only source of information available to a human observer was the signing of the chimpanzee;" 2) "that independent observers agreed with each other;" and 3) "that the chimpanzees used the signs to refer to natural language categories—that the sign DOG could refer to any dog, FLOWER to any flower, SHOE to any shoe.