35621
The Aerojet AJ10-118F ( Delta-F ) was flown on three launches , with Explorer 47 , 50 and 51 ; the Aerojet engine was flown for the ( Anik A1 ) satellite launch ( mistakenly marked as xx1x in Delta 1000 series ) ; and the new TRW TR-201 engine ( Delta-P ) was used on the last 2 launches in 1975 .
 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