74078
Six months prior to the chaotic event ( in December 1978 ) , popular progressive rock radio station WDAI ( WLS-FM ) had suddenly switched to an all-disco format , disenfranchising thousands of Chicago rock fans and leaving Dahl unemployed .
 organization: WDAI; organization: WLS-FM; location: Chicago; person: Dahl
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: WDAI, WLS-FM, Chicago, Dahl 
Answer:
 organization: WDAI; organization: WLS-FM; location: Chicago; person: Dahl