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In his later years in high school , Sean gained a valuable relationship with Detroit hip-hop station WHTD ; he would show his rhyming skills on a weekly basis as part of a rap battle contest held by the station .
 Sean, Detroit
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sean, Detroit