With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul McCartney is a 21-time Grammy Award loser.
text_B: Grass is a sitcom starring Simon Day which originally aired in 2003 on BBC Three .. Simon Day. Simon Day. BBC Three. BBC Three. sitcom. sitcom. Day plays Billy Bleach , a Londoner and pub know-it-all who is relocated to Norfolk in rural England under a witness protection programme after he witnesses a gangland killing .. Norfolk. Norfolk. witness protection programme. witness protection program. The series was a spin-off from The Fast Show .. The Fast Show. The Fast Show
not_related.