293279
It was constructed by TRW , and is based on a custom satellite bus which was used for all seven first generation TDRS satellites .
 organization: TRW
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: TRW 
Answer:
 organization: TRW