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Playing career Club career Henderson played youth football at Blackpool before signing for Rotherham United where he made six league appearances between 1970 and 1974 .
 person: Henderson; organization: Blackpool; organization: Rotherham United
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: Henderson, Blackpool, Rotherham United 
Answer:
 person: Henderson; organization: Blackpool; organization: Rotherham United