Assertion: chimpanzee | /r/CapableOf | break off live tree branch
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Source sentences:
text: The chimps would first break off a live tree branch, usually about 2 feet (0.6 meters) long; then pull off any leaves and twigs; then, in many cases, scrape off some of the bark at one end of the stick and create a point at that end of the stick by gnawing away at the tip with their incisors.