Question: The 2010 American post-apocalyptic thriller film Vanishing on 7th Street stars which Canadian actor and producer who began his career on Canadian television at a young age and appeared in "Life as a House" (2001)?
{'answer': 'Hayden Christensen', 'supporting_facts': [['Vanishing on 7th Street', 0], ['Hayden Christensen', 0], ['Hayden Christensen', 1], ['Hayden Christensen', 2]]}