Complex sentence: The Canton Bulldogs were the first professional American football team based in Canton, Ohio, in played in the Ohio League from 1903 to 1906 and 1911 to 1919, and in the National Football League from 1920 to 1923 and 1925 to 1926.
Split into simpler sentences: The Canton Bulldogs were the first professional American football team based in Canton, Ohio. They played in the Ohio League from 1903 to 1906 and 1911 to 1919, and in the National Football League from 1920 to 1923 and 1925 to 1926.