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Via the Stillwater River , the Great Miami River , and the Ohio River , its water flows to the Mississippi River and ultimately the Gulf of Mexico .
 location: Stillwater River; location: Great Miami River; location: Ohio River; location: Mississippi River; location: Gulf of Mexico
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: Stillwater River, Great Miami River, Ohio River, Mississippi River, Gulf of Mexico 
Answer:
 location: Stillwater River; location: Great Miami River; location: Ohio River; location: Mississippi River; location: Gulf of Mexico