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Several riders were blown violently off their bikes , including Geraint Thomas when he was leading the breakaway group , prompting media to describe the race as " mayhem " and " one of the wildest bike races in recent years " .
 person: Geraint Thomas
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: Geraint Thomas