Original sentence: Conditioned for racing by Hall of Fame trainer MacKenzie Miller, Winter's Tale began racing at age three in 1980 and, because he was a gelding, contined to race through age seven.In 1980, he had an oustanding year, winning many of the top dirt races for older horses in the pre-Breeders' Cup era
Edited sentence: Conditioned for racing by Hall of Fame trainer MacKenzie Miller, Winter's Tale began racing at age three in 1980 and, because he was a gelding, continued to race through age seven.In 1980, he had an outstanding year, winning many of the top dirt races for older horses in the pre-Breeders' Cup era