Complex sentence: Ruislip-Northwood was a borough constituency represented in the House of Commons of the UK Parliament 1950--2010 that elected one member (MP) by the first past the post system of election.
Split into simpler sentences: Ruislip-Northwood was a borough constituency represented in the House of Commons of the Parliament of the United Kingdom. It elected one Member of Parliament (MP) by the first past the post system of election.