Question: What is the start date that 129383 is the exploitation visa number for Thor whose box office is 449326618 United States dollars?
Choices:
1516-01-01
2006-03-12
1982-10-01
1992-07-09
2010-01-15
1993-11-01
2011-04-21
1996-07-19
1835-06-02
1850