189582
KXGM ( 850 AM ) is a silent radio station that served the Waterloo , Iowa , area .
 location: Waterloo , Iowa
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: Waterloo , Iowa 
Answer:
 location: Waterloo , Iowa