Question: Who owned the British train operating company that was the last operator of the London railway station which was replaced by the new Thameslink platforms at St Pancras in December 2007?
{'answer': 'FirstGroup', 'supporting_facts': [["King's Cross Thameslink railway station", 0], ["King's Cross Thameslink railway station", 1], ["King's Cross Thameslink railway station", 2], ['First Capital Connect', 0]]}