With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mr. Nobody stars an actor.
text_B: Durham / Northumberland 1 is an English Rugby Union league at the seventh tier of the domestic competition , the top level for local rugby union in North East England .. North East England. North East England. The champions are automatically promoted to North 1 East , a division with a wider geographical area which also encompasses Yorkshire .. North 1 East. North 1 East. The runners up participates in a playoff against the 2nd place team from the equivalent regional league , Yorkshire 1 , for promotion to North 1 East .. North 1 East. North 1 East. Yorkshire 1. Yorkshire 1. The bottom two clubs are relegated to Durham / Northumberland 2 .. Durham / Northumberland 2. Durham / Northumberland 2
not_related.