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Boris Johnson lined up for safe Tory seat ahead of 2015 general election http://t.co/bxB0OLi7 via @ guardian & lt ; so he can succeed Cameron !
 Boris Johnson, Tory, guardian, Cameron
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Boris Johnson, Tory, guardian, Cameron