With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Donnie Wahlberg attended an American songwriting school.
text_B: Justus Ketchum Smith -LRB- March 28 , 1922 -- November 20 , 2013 -RRB- was an American rower who competed at the 1948 Summer Olympics .. rower. Rowing ( sport ). 1948 Summer Olympics. 1948 Summer Olympics. He won the gold medal with the American team in the coxed eights competition .
not_related.