With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lyndon B. Johnson enacted the Voting Rights Act.
text_B: The Tupolev ANT-7 , known by the VVS as the Tupolev R-6 -LRB- R -- razvedchik -- reconnaissance -RRB- , was a reconnaissance aircraft and escort fighter of the Soviet Union .. VVS. Soviet Air Forces. Soviet Union. Soviet Union. The R-6 traces its roots back to early 1928 when the Soviet Air Force needed a long-range multirole aircraft .. Soviet Air Force. Soviet Air Force. The requirements were that it could be used for long-range transport , defensive patrolling , reconnaissance , light bombing and torpedo attack .
not_related.