With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Disinvestment from South Africa involved Britain.
text_B: Max Abramovitz -LRB- May 23 , 1908 -- September 12 , 2004 -RRB- was an American architect .. architect. architect. He was best known for his work with the New York City firm Harrison & Abramovitz .. Harrison & Abramovitz. Harrison & Abramovitz. New York City. New York City
not_related.