226094
For several years , two Bell helicopters from Kachina Helicopters were used under contract by the County .
 organization: Bell helicopters
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: Bell helicopters 
Answer:
 organization: Bell helicopters