With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Alphabet works in different fields.
text_B: USM Alger , an Algerian professional association football club , has gained entry to Confederation of African Football -LRB- CAF -RRB- competitions on several occasions .. USM Alger. USM Alger. association football. association football. Confederation of African Football. Confederation of African Football. They have represented Algeria in the Champions League on seven occasions , the Confederation Cup on Three separate occasions , the now-defunct Cup Winners ' Cup five separate occasions , and the now-defunct CAF Cup one occasions .. Champions League. CAF Champions League. Confederation Cup. CAF Confederation Cup. CAF Cup. CAF Cup
not_related.