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Following Peter Costello 's rejection of the leadership of the Parliamentary Liberal Party , Abbott nominated for the position of party leader , along with Malcolm Turnbull and Brendan Nelson .
 Peter Costello, Parliamentary Liberal Party, Abbott, Malcolm Turnbull, Brendan Nelson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Peter Costello, Parliamentary Liberal Party, Abbott, Malcolm Turnbull, Brendan Nelson