9747
He was an enthusiast of boxing and was friends with both Jack Dempsey and Gene Tunney .
 person: Jack Dempsey; person: Gene Tunney
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Jack Dempsey; person: Gene Tunney