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When Brooke had made his own speech submitting his candidacy , Conservative MP John Biffen moved an amendment to the original motion to elect Betty Boothroyd , who was then seconded by Labour MP Gwyneth Dunwoody .
 Conservative, John Biffen, Betty Boothroyd, Labour, Gwyneth Dunwoody
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Conservative, John Biffen, Betty Boothroyd, Labour, Gwyneth Dunwoody