With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Charles Woodruff Yost was a United States Ambassador to the United Nations for two years.
text_B: The United States Ambassador to the United Nations is the leader of the U.S. delegation , the U.S. Mission to the United Nations .. U.S. Mission. United States Mission to the United Nations. United Nations. United Nations. United States. United States. The position is more formally known as the `` Permanent Representative of the United States of America to the United Nations , with the rank and status of Ambassador Extraordinary and Plenipotentiary , and Representative of the United States of America in the Security Council of the United Nations '' ; it is also known as the U.S. Permanent Representative , or `` Perm Rep '' , to the United Nations .. United Nations. United Nations. Permanent Representative. UN Permanent Representative. United States. United States. Ambassador Extraordinary and Plenipotentiary. Ambassador Extraordinary and Plenipotentiary. Security Council of the United Nations. United Nations Security Council. The U.S. Permanent Representative , currently Nikki Haley , is charged with representing the United States on the U.N. Security Council and during almost all plenary meetings of the General Assembly , except in the rare situation in which a more senior officer of the United States -LRB- such as the U.S. Secretary of State or the President of the United States -RRB- is present .. Nikki Haley. Nikki Haley. President of the United States. President of the United States. Permanent Representative. UN Permanent Representative. United States. United States. General Assembly. United Nations General Assembly. U.S. Secretary of State. United States Secretary of State. President. President of the United States. Like all United States ambassadors , he or she must be nominated by the U.S. President and confirmed by the Senate .. United States. United States. United States ambassadors. Ambassadors from the United States. President. President of the United States. confirmed. advice and consent. Senate. United States Senate. Many prominent U.S. politicians and diplomats have held the post , including Adlai Stevenson II , George H. W. Bush , Jeane Kirkpatrick , and Madeleine Albright .. Adlai Stevenson II. Adlai Stevenson II. George H. W. Bush. George H. W. Bush. Jeane Kirkpatrick. Jeane Kirkpatrick. Madeleine Albright. Madeleine Albright. Nikki Haley was nominated for this position by President Donald Trump and was confirmed by the Senate .. Nikki Haley. Nikki Haley. President. President of the United States. confirmed. advice and consent. Senate. United States Senate. Donald Trump. Donald Trump. She assumed office upon presenting her credentials to the UN Secretary-General on January 27 , 2017 .. UN Secretary-General. UN Secretary-General
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