Question: Biteback Publishing is a British publisher concentrating on political titles, he has published several of Michael Ashcroft's books including "Call Me Dave", his controversial 2015 biography of David Cameron, David William Donald Cameron (born 9 October 1966) is a British politician who was Prime Minister of the United Kingdom from 2010 to 2016, and Leader of the Conservative Party from 2005 to which year?
Sentence (from "United Kingdom general election debates, 2010"): The United Kingdom general election debates of 2010 consisted of a series of three leaders' debates between the leaders of the three main parties contesting the 2010 United Kingdom general election: Gordon Brown, Prime Minister and leader of the Labour Party; David Cameron, Leader of the Opposition and Conservative Party; and Nick Clegg, leader of the third largest political party in the UK, the Liberal Democrats.
Relevant evidence: No