question: What minority leaders have played prominenct roles to opposing incumbent president ?
answer: Gerald Ford , Richard Gephardt , Nancy Pelosi , and John Boehner
turker_answer: Gerald Ford , Richard Gephardt , Nancy Pelosi , and John Boehner are all minority leaders who have played prominent roles to opposing incumbent president .
rule-based: Gerald Ford , Richard Gephardt , Nancy Pelosi , and John Boehner have played prominenct roles to opposing incumbent president .