Assertion: human's brain | /r/HasProperty | around 680 cubic centimeters
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Source sentences:
text: Compared to australopiths, H. habilis has a relatively and absolutely bigger brain (average cranial capacity [a measure of the volume of the braincase, used to estimate brain volume] is around 680 cubic centimeters), a more vertical forehead, and weaker brow ridges (the enlarged bony area over the eye sockets).