With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Superman has been portrayed by an American.
text_B: The Australian Racing Hall of Fame is part of the Australian Racing Museum which documents and honours the horseracing legends of Australia .. horseracing. horse racing. Australia. Australia. Hall of Fame. Hall of Fame. The museum officially opened in 1981 and created the Hall of Fame in 2000 .. Hall of Fame. Hall of Fame. The numbers in brackets after each name indicates the year of induction into the Hall of Fame .. Hall of Fame. Hall of Fame
not_related.