Question: On 23 July 2004, the Member of Parliament for Hartlepool, in England, which British Labour politician, president of international think tank Policy Network and Chairman of strategic advisory firm Global Counsel, was nominated as the United Kingdom's new European Commissioner?
{'answer': 'Peter Benjamin Mandelson', 'supporting_facts': [['Hartlepool by-election, 2004', 0], ['Peter Mandelson', 0]]}