With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Radiohead has used guitars.
text_B: Sotiris Leontiou -LRB- Greek  : Σωτηρης Λεοντιου born on 17 July 1984 in Ioannina , Greece -RRB- is a Greek footballer who plays for P.O. Psychikou , as defensive midfielder or as a left full back .. Ioannina. Ioannina. Greece. Greece. Greek. Greek people. footballer. Association football. defensive midfielder. defensive midfielder. full back. Fullback ( association football )#Full back
not_related.