Where is the headquarter located of which John Claiborne was an early president?
John Claiborne (baseball executive): John W. Claiborne III (born 1939) is a former front-office executive in American Major League Baseball who also was an early president of the New England Sports Network (NESN), a regional cable television network primarily (80 percent) owned by the Boston Red Sox that telecasts Red Sox baseball and Boston Bruins National Hockey League games. New England Sports Network:  Headquartered in Watertown, Massachusetts, the network is primarily carried on cable providers throughout New England (except in Fairfield County, Connecticut, which is part of the greater New York City media market).
i don't know