Premise: Anthony Charles Lynton Blair ( born 6 May 1953 ) is a British politician who served as Prime Minister of the United Kingdom from 1997 to 2007 and Leader of the Labour Party from 1994 to 2007 . Blair was succeeded as the leader of the Labour Party and as Prime Minister by Gordon Brown in June 2007 .
Hypothesis: Tony Blair was leader of the Conservative Party.
Label: CONTRADICTION