In 2012, Schwarzenegger helped to found the Schwarzenegger Institute for State and Global Policy, which is a part of the USC Sol Price School of Public Policy at the University of Southern California. The Institute's mission is to "[advance] post-partisanship, where leaders put people over political parties and work together to find the best ideas and solutions to benefit the people they serve," and to "seek to influence public policy and public debate in finding solutions to the serious challenges we face." Schwarzenegger serves as chairman of the Institute.

Answer this question, if possible (if impossible, reply "unanswerable"): What position does Schwarzenegger hold with the Institute?
chairman