Question: 2014 Tokyo Marathon was the first of the series of events that were held, beginning in which year?
Sentence (from "World Marathon Majors"): It comprises six annual races for the cities of Tokyo (starting in 2013), Boston, London, Berlin, Chicago and New York City (except 2012), a biennial race, the IAAF World Championships Marathon, and a quadrennial race, the Olympic Games Marathon.
Relevant evidence: No