With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Led Zeppelin released an eponymous debut single.
text_B: The Uniforms of the Canadian Armed Forces are the official dress worn by members of Canada 's military while on duty .. Prior to unification in 1968 , the uniforms of the Canadian Army , Royal Canadian Navy -LRB- RCN -RRB- and Royal Canadian Air Force -LRB- RCAF -RRB- were similar to their counterparts in the forces of the United Kingdom and other Commonwealth countries , save for national identifiers and some regimental accoutrements .. unification in 1968. Unification of the Canadian Forces. Canadian Army. Canadian Army. Royal Canadian Navy. Royal Canadian Navy. Royal Canadian Air Force. Royal Canadian Air Force. United Kingdom. United Kingdom. Commonwealth. Commonwealth of Nations. With unification in 1968 all branches started wearing the new Canadian Forces CF rifle green uniform .. unification in 1968. Unification of the Canadian Forces. The present distinctive environmental uniforms in different colours for the army , navy and air force were introduced in the late 1980s and are generally similar to their pre-1968 counterparts .
not_related.