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Farther east is the San Pedro River of the San Pedro Valley , a holocene paleontology region .
 location: San Pedro River; location: San Pedro Valley
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: San Pedro River, San Pedro Valley 
Answer:
 location: San Pedro River; location: San Pedro Valley