Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Who discovered what was already discovered?

The doc allocated about one minute to Native crossings along an 18,000 year old Siberian-Alaskan ice bridge. Nothing about subsequent repeated Native crossings either on land or by water and extending as far as South America. The rest of the doc is focused on inferences covering the past couple of thousand years and were often based on a singular questionable written reference or a singular ambiguous artifact and location. A case for Aliens could just as easily have been made given that one can rationalize an ordered pattern in any set of random data. If only those Natives had been resource devouring capitalists the outcome would have been different.