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Coaching changes Departures from 2012Former offensive coordinator Dave Brock accepted an offer to become the head coach of the Delaware Blue Hens .
 Dave Brock, Delaware Blue Hens
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dave Brock, Delaware Blue Hens