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By the early 1960s with the twin Paxman 12-RPHL engines coming to the end of their useful life , the Mechanical Branch began looking at repowering options .
 organization: Paxman
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Paxman