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Patrick Bruce Whitehouse OBE ( 1922 – 1993 ) pioneered the preservation of disused railway branch line s , and the restoration to working order of the finest of Britain 's steam locomotive s after they were replaced by diesel locomotion in the 1960s .
 Patrick, Whitehouse
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Patrick, Whitehouse