With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Spider-Man is not a fictional character based on American comic books.
text_B: Mario Vallotto -LRB- 18 November 1933 -- 22 April 1966 -RRB- was an Italian cyclist .. He won a gold medal in the team pursuit at the 1960 Summer Olympics .. 1960 Summer Olympics. 1960 Summer Olympics. A year earlier he won the individual pursuit at the Mediterranean Games and finished second at the world championships .. Mediterranean Games. Mediterranean Games
not_related.