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Council member and law professor John Heilman is the city 's longest-serving council member ( having served almost continuously since November 1984 ) .
 person: John Heilman
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: John Heilman 
Answer:
 person: John Heilman