Question: The 2010–11 Tour de Ski was the 5th edition of the Tour de Ski and took place from 31 December 2010 to which date, Swiss cross-country skier, Dario Cologna won the Men's class?
{'answer': '9 January 2011', 'supporting_facts': [['2010–11 Tour de Ski', 0], ['Dario Cologna', 0]]}