7754
In 1975 , he played harmonica on two tracks on Billy Preston 's album " It 's My Pleasure " .
 person: Billy Preston
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: Billy Preston 
Answer:
 person: Billy Preston