With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ronald Reagan had at least six presidents before him.
text_B: Anatoli Petrovich Zarapin -LRB- Анатолии Петрович Зарапин born 13 June 1947 -RRB- is a Russian professional football coach and a former player .. football. Association football
not_related.