370700
Though primarily used in wildland firefighting , the helicopters have seen limited use in fighting large structure fires as well .
 organization: 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: helicopters 
Answer:
 organization: helicopters