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He retired three years later , after one season in amateur football with CA River Ebro in his native region , aged 37 .
 CA River Ebro
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:
 CA River Ebro