Question: In what year did the former chairman of the 2016 Clinton campaign found a firm in D.C.?
Sentence (from "Vanni Treves"): Vanni Emanuele Treves CBE (born 1940 in Florence, Italy) is a former Chairman of Channel 4, former Senior Partner of City law firm Macfarlanes and former Chairman (2001-2009) of Equitable Life.
Relevant evidence: No