71115
( During one game , an errant throw sailed into the stands and hit sportscaster Keith Olbermann 's mother in the head ) .
 person: Keith Olbermann
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: Keith Olbermann 
Answer:
 person: Keith Olbermann