With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nikolaj Coster-Waldau is an actor.
text_B: First Call was an American contemporary Christian music -LRB- CCM -RRB- group , originally consisting of Mel Tunney , Marty McCall , and Bonnie Keen .. contemporary Christian music. contemporary Christian music. Mel 's husband , Dick Tunney , acted as the arranger and producer for many of the group 's early projects .
not_related.