With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sarcoidosis was described by an English doctor.
text_B: The 38th edition of the annual Clasico RCN , a bicycle stage race , was held from August 14 to August 23 , 1998 , in Colombia .. Clasico RCN. Clasico RCN. stage race. stage race. Colombia. Colombia. The race with an UCI rate of 2.4 started in Barrancabermeja and finished in Bogota with an individual time trial .. UCI. Union Cycliste Internationale. Barrancabermeja. Barrancabermeja. Bogota. Bogota. RCN stands for `` Radio Cadena Nacional '' -- one of the oldest and largest radio networks in the nation .. There were a total of 95 competitors from 13 teams , with 81 cyclists actually finishing the stage race .. stage race. stage race
not_related.