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From July 2011 to January 2013 he was a member of the coaching staff at Nottingham Forest , leaving the club when manager Sean O'Driscoll was dismissed .
 organization: Nottingham Forest; person: Sean O'Driscoll
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Nottingham Forest, Sean O'Driscoll 
Answer:
 organization: Nottingham Forest; person: Sean O'Driscoll