Assertion: human body's part | /r/HasProperty | one-third of the total
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Source sentences:
text: This early part of the book, about one-third of the total, gives the reader a good, contemporary understanding of the various early hominids such as Homo erectus, Homo neanderthalensis, Homo rudolfensis, etc. and how their bodies and habits differed from one another and from Homo sapiens.