1096
Its Del Mar Racetrack was built by the Thoroughbred Club in 1937 by founding members Bing Crosby and Pat O'Brien with Paramount Studios as corporate sponsor .
 location: Del Mar; person: Bing Crosby; person: Pat O'Brien; organization: Paramount Studios
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: Del Mar, Bing Crosby, Pat O'Brien, Paramount Studios 
Answer:
 location: Del Mar; person: Bing Crosby; person: Pat O'Brien; organization: Paramount Studios