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After two years at Rovers , Mitchell joined Grimsby Town in 1978 where he made his name as a left-footed midfielder , playing a key role in Grimsby 's promotion in 1980 .
 organization: Rovers; person: Mitchell; organization: Grimsby Town; organization: Grimsby
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Rovers, Mitchell, Grimsby Town, Grimsby 
Answer:
 organization: Rovers; person: Mitchell; organization: Grimsby Town; organization: Grimsby