Complex sentence: Frank Doran was defeated in Aberdeen South at the 1992 general election by the Conservative and Unionist Raymond Robertson by 1,517 votes, this was the only seat which Labour lost to the Conservatives at that election.
Split into simpler sentences: Frank Doran was defeated in Aberdeen South at the 1992 general election by the Conservative and Unionist Raymond Robertson by 1,517 votes. This was the only seat which Labour lost to the Conservatives at that election.