With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Yangon is Myanmar's biggest metropolis.
text_B: The Ahmad Jamal Trio  : Volume IV is a 1958 jazz album by pianist Ahmad Jamal .. Ahmad Jamal. Ahmad Jamal. jazz. jazz. album. album. The album was recorded live on location at the Spotlite Club in Washington , DC on September 6 , 1958 .. album. album. Spotlite Club. Spotlite Club. The LP was released as Argo Records LP-636 .. Argo Records. Argo Records. This was Jamal 's first recording following his surprise hit record , At the Pershing  : But Not for Me .
not_related.