With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael McCullers worked with Americans and he was successful.
text_B: Sir Horace James Seymour -LRB- 26 February 1885 -- 10 September 1978 -RRB- was a British diplomat , Ambassador of the United Kingdom to China from 1942 to 1946 .. British. United Kingdom. diplomat. diplomat. Ambassador of the United Kingdom to China. List of Ambassadors of the United Kingdom to China
not_related.