Complex sentence: Banfield unsuccessfully contested the 1918 general election in Birmingham Aston, and was also unsuccessful in Fulham West at a by-election in 1930 and at the 1931 general election.
Split into simpler sentences: Banfield unsuccessfully contested the 1918 general election in Birmingham Aston. He was unsuccessful in Fulham West at a by-election in 1930 and at the 1931 general election.