With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pembroke Castle is the smallest privately owned castle in Wales.
text_B: Kevin Mark Levrone is an American IFBB professional bodybuilder , IFBB Hall of Famer , blogger and musician .. IFBB. International Federation of BodyBuilding & Fitness. bodybuilder. bodybuilder. During his professional career , Levrone competed in 68 IFBB Professional contests .. IFBB. International Federation of BodyBuilding & Fitness. He has won 23 Pro Shows , holding the record of the most wins as an IFBB professional until Ronnie Coleman set the new record in 2004 .. IFBB. International Federation of BodyBuilding & Fitness. Ronnie Coleman. Ronnie Coleman. Despite having been away from competition for well over a decade since he retired in 2003 Kevin officially announced in mid 2016 that he would return to once again compete at the professional level on stage at the Mr. Olympia contest .. At age 51 Levrone made his professional bodybuilding return competing , as announced , at the 2016 Mr. Olympia .
not_related.