1815
In boxing , the term was historically associated with fighters such as Benny Leonard and Sugar Ray Robinson who were widely considered to be the most skilled fighters of their day , to distinguish them from the generally more popular ( and better compensated ) heavyweight champions .
 person: Benny Leonard; person: Sugar Ray Robinson
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: Benny Leonard; person: Sugar Ray Robinson