66540
The central bay held a six-cylinder two-stroke diesel engine , manufactured by Petters , which was coupled to a direct current generator .
 organization: Petters
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: Petters 
Answer:
 organization: Petters