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Playing career Butler started his career at Birmingham & District League side Willenhall , before joining Walsall in 1921 .
 person: Butler; organization: Birmingham & District League; organization: Willenhall; organization: Walsall
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: Butler, Birmingham & District League, Willenhall, Walsall 
Answer:
 person: Butler; organization: Birmingham & District League; organization: Willenhall; organization: Walsall