With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kiefer Sutherland is only an actor.
text_B: The Men 's 100 metre individual medley competition of the 2014 FINA World Swimming Championships -LRB- 25 m -RRB- was held on 6 December with the heats and the semifinals and 7 December with the final .
not_related.