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This was one of the most difficult settlements because the pioneers were repeatedly washed out by floods of the Virgin River and the Santa Clara River .
 location: Virgin River; location: Santa Clara River
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: Virgin River, Santa Clara River 
Answer:
 location: Virgin River; location: Santa Clara River