71474
By the end of the test programme in 1975 the RB .193 had accumulated 12 hours of flight time and 91 flights .
 None
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:  
Answer:
 None