With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nikola Tesla received an advanced education in engineering.
text_B: Irwin Robert Coolbaugh -LRB- July 5 , 1939 -- June 1985 -RRB- was an American football wide receiver in the American Football League -LRB- AFL -RRB- for the Oakland Raiders .. Oakland Raiders. Oakland Raiders. American football. American football. wide receiver. wide receiver. American Football League. American Football League. He played college football at the University of Richmond and was drafted in the fifteenth round of the 1961 AFL Draft .. Richmond. Richmond Spiders football. college football. college football. University of Richmond. University of Richmond. 1961 AFL Draft. 1961 American Football League Draft. drafted. NFL Draft. Coolbaugh was also drafted in the 12th round of the 1961 NFL Draft by the Washington Redskins .. Washington Redskins. Washington Redskins. drafted. NFL Draft. 1961 NFL Draft. 1961 NFL Draft
not_related.