Complex sentence: The Premiership of Gordon Brown began on 27 June 2007, when Brown accepted the Queen's invitation to form a government, replacing Tony Blair as the Prime Minister of the United Kingdom, and ended with his resignation as Prime Minister on 11 May 2010.
Split into simpler sentences: The Premiership of Gordon Brown began on 27 June 2007 when Brown accepted the Queen's invitation to form a government, replacing Tony Blair as the Prime Minister of the United Kingdom. It ended with his resignation as Prime Minister on 11 May 2010.