With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ed Sheeran is an English singer-songwriter.
text_B: The Pain may refer to  :. The Pain -- When Will It End ?. , a political webcomic. The Pain -LRB- film -RRB- , a 2009 Turkish film. The Pain -LRB- Metal Gear -RRB- , a fictional character. Nickname for professional wrestler and former UFC fighter Brock Lesnar. UFC. UFC. Brock Lesnar. Brock Lesnar
not_related.