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In 2012 the paleolithic diet was described as being one of the " latest trends " in diets , based on the popularity of diet books about it ; in 2013 and 2014 the Paleolithic diet was Google 's most searched weight-loss method .
 Google
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Google