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Dynamic positioning is used by much of the offshore oil industry , for example in the North Sea , Persian Gulf , Gulf of Mexico , West Africa , and off the coast of Brazil .
 North Sea, Persian Gulf, Gulf of Mexico, West Africa, Brazil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 North Sea, Persian Gulf, Gulf of Mexico, West Africa, Brazil