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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 .
 Spencer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Spencer