With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A WCT Finals title has been won by Ivan Lendl.
text_B: Philip J. Pierre is a Saint Lucian politician who is the political leader of the Saint Lucia Labour Party .. Saint Lucia. Saint Lucia. Saint Lucia Labour Party. Saint Lucia Labour Party. He has been the parliamentary representative for the Castries East constituency since 1997 .. Castries. Castries. He became Deputy Prime Minister and Minister for Infrastructure , Port Services and Transport in 2011 .. Pierre was selected as Leader of the Opposition following SLP losses at the 2016 general election .. 2016 general election. Saint Lucian general election, 2016. He was confirmed leader of the Labour Party on 18 June 2016 .
not_related.