With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: U2 is a pop band.
text_B: Angelita Detudamo -LRB- born 31 October 1986 , Denigomodu -RRB- is a Nauruan female tennis player .. Denigomodu. Denigomodu. tennis. tennis. First year Playing for Pacific Oceania at the 2004 Fed Cup , Patrimonio has a win -- loss record of 2 -- 1 .. Pacific Oceania. Pacific Oceania Fed Cup team. Fed Cup. Fed Cup
not_related.