Question: Barry James O'Sullivan, an Australian politician, a former police detective, grazier, property developer and LNP executive treasurer, O'Sullivan was appointed by the Queensland Parliament to the Senate seat vacated by which Australian politician who has served as the Deputy Prime Minister of Australia?
{'answer': 'Barnaby Thomas Gerard Joyce', 'supporting_facts': [["Barry O'Sullivan (politician)", 1], ['Barnaby Joyce', 0]]}