With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Charles Woodruff Yost died in 1981.
text_B: Charles Woodruff Yost -LRB- November 6 , 1907 -- May 21 , 1981 -RRB- was a career U.S. diplomat who was assigned as his country 's representative to the United Nations from 1969 to 1971 .. representative. United States Ambassador to the United Nations. United Nations. United Nations
related.