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Then in 1975 , at the age of 23 , Spencer joined Tyne Tees and became popular with viewers as the duty announcer on Saturday mornings , when on-air links often featured competitions , interviews and birthday greetings .
 person: Spencer
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: Spencer 
Answer:
 person: Spencer