With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Erich von Manstein was murdered on June 9, 1973
text_B: There have been several sports events known as the Maghreb Championships , including  :. Maghreb Athletics Championships , a defunct athletics competition. Maghreb Athletics Championships. Maghreb Athletics Championships. Maghreb Champions Cup , a defunct football competition. Maghreb Champions Cup. Maghreb Champions Cup. Maghreb Cup Winners Cup , a defunct football competition. Maghreb Cup Winners Cup. Maghreb Cup Winners Cup. Maghreb Cross Country Championships , a cross country running competition. Maghreb Cross Country Championships. Maghreb Cross Country Championships. Maghreb Judo Youth Championships , a judo competition for judoka aged under 18. Maghreb Judo Youth Championships. Maghreb Judo Youth Championships
not_related.