327428
It was constructed by TRW as a replacement for TDRS-B , which had been lost in the Challenger accident , and was the last first-generation TDRS satellite to be launched .
 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