Complex sentence: At the 1969 Stormont General Election UUP candidates stood on both pro and anti-O'Neill platforms, with several independent pro-O'Neill Unionists challenging his critics, whilst the Protestant Unionist Party of Ian Paisley mounted a hard-line challenge.
Split into simpler sentences: At the 1969 Stormont General Election UUP candidates stood on both pro- and anti-O'Neill platforms. Several independent pro-O'Neill unionists challenging his critics, whilst the Protestant Unionist Party of Ian Paisley mounted a hard-line challenge.