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Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

This is a feminist parable with the Neaderthals (almost all the Neanderthal characters are men) representing the male oppressors of the intellectually and emotionally more evolved female represented by the Cro-Magnon, Ayla. I giggled every time one of the Neaderthal characters "made the sign" indicating the command for sexual favors, picturing the short rhythmic fist pumping motion sometimes used by modern males to allude to intercourse. Two stars - one for the sometimes interesting anthropological details - one for the laughs.
Output:
Negative