Question: Which Republican House Representative was defeated by Thad Cochran for a Senate Chair in 2014?
Sentence (from "Jim Marzilli"): Marzilli, a Democrat, was elected to the Senate in a special election in December 2007, representing the communities of Arlington, Billerica, Burlington, Lexington and Woburn partway through his ninth term in the Massachusetts House of Representatives, representing Arlington and West Medford.
Relevant evidence: No