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This environment may be compared to that of other ancient centers of civilization : the Nile , Indus , and Yellow River valleys and Mesopotamia .
 location: Nile; location: Indus; location: Yellow River; location: Mesopotamia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Nile; location: Indus; location: Yellow River; location: Mesopotamia