115413
After two were purchased , the designation was changed to Martin MT. Development In response to a requirement from the Air Service for a bomber that was superior to the Handley Page O/400 .
 organization: Martin; organization: Service
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: Martin, Service 
Answer:
 organization: Martin; organization: Service