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Transport commentator Christian Wolmar has asserted the high cost of leasing is due to the way the franchises are distributed to the train operating companies .
 person: Christian Wolmar
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:
 person: Christian Wolmar