| http://www.w3.org/ns/prov#value | - ???Tool-use has long fascinated us, especially since we are the quintessential tool-users and it was once believed to be a hallmark of humankind,??? Patterson explains. ???But some primates, elephants, birds and other species also use tools, and studying why and how they do so provides insight into the context in which tool-use arises.???
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