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The center was named after College alumnus Mark McCormack ( Class of 1951 ) and his wife , retired professional tennis player Betsy Nagelsen .
 person: Mark McCormack; person: Betsy Nagelsen
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: Mark McCormack, Betsy Nagelsen 
Answer:
 person: Mark McCormack; person: Betsy Nagelsen