Complex sentence: The Hackney South by-election of 1922 was held on 18 August 1922, after the expulsion from the House of Commons of the incumbent MP, Horatio Bottomley, who was leader of the Independent Parliamentary Group which attacked the Lloyd George coalition from the right.
Split into simpler sentences: The Hackney South by-election of 1922 was held on 18 August 1922. The by-election was held due to the expulsion from the House of Commons of the incumbent MP, Horatio Bottomley, who was leader of the Independent Parliamentary Group which attacked the Lloyd George coalition from the right.