Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: I read the book first

I have no quarrel with the acting or filming which is very good.The major problem here is with content.1) The Neanderthal weren't cross fertile with modern humans ( cro-magnon men).2) In fact from bones found in Neanderthal camp fires, they ate humans.3) The sling, like the bow and arrow, were later in the stone age;spear throwers were the height of technology closer to this era.I think that a more authentic representation of Neanderthalsmight be in order. Apparently if not at war with them from 40000 bcto 28000 bc, humans at least did not associate well with Neanderthals.