claim: Watertown, Massachusetts is in the United States.
evidence: Bobby Hill -LRB- born July 8 , 1922 -RRB- is an American motorcycle racer .. American. United states. motorcycle racer. motorcycle sport. He won the A.M.A. Grand National Championship in 1951 and 1952 by virtue of his victories on the Springfield Mile .. A.M.A. Grand National Championship. A.M.A. Grand National Championship. Springfield Mile. Springfield Mile. Hill won a total of 12 AMA nationals during his professional racing career spanning the years 1947 to 1959 .. He was inducted to the AMA Motorcycle Hall of Fame in 1998 .. Motorcycle Hall of Fame. Motorcycle Hall of Fame