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This hurt domestic oil producers in places like Texas and Oklahoma who had been selling oil at tariff-supported prices and now had to compete with cheap oil from the Persian Gulf region .
 location: Texas; location: Oklahoma; location: Persian Gulf
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: Texas, Oklahoma, Persian Gulf 
Answer:
 location: Texas; location: Oklahoma; location: Persian Gulf