What film starring Natalie Portman appeared at the 67th Venice International Film Festival?
67th Venice International Film Festival: The 67th annual Venice International Film Festival held in Venice, Italy, took place from 1 to 11 September 2010. Black Swan (film):  It stars Natalie Portman, Vincent Cassel, Mila Kunis, Barbara Hershey and Winona Ryder.
i don't know