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Geographically it has been defined as from the Sierra Madre Oriental to the Gulf of Mexico with the Sierra de Tamaulipas as the north border and the Cazones River as the south .
 Sierra Madre Oriental, Gulf of Mexico, Sierra de Tamaulipas, Cazones River
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:
 Sierra Madre Oriental, Gulf of Mexico, Sierra de Tamaulipas, Cazones River