Assertion: human's tool | /r/HasProperty | tool
Facets:
Source sentences:
text: The Acheulean toolkit is dominated by stone flakes, but also includes the first bifacially worked tools--tools made by working both sides of a cobble.
text: In addition, Homo sapiens was the first species to frequently produce tools made from bone and developed new technologies for making composite tools (tools that comprise different parts that are combined to form a tool).