With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Broadchurch is a chapel in London.
text_B: The Mpassa River is a tributary of the Ogooue River .. tributary. tributary. Ogooue River. Ogooue River. It flows in Gabon , and passes through Franceville .. Gabon. Gabon. Franceville. Franceville. Its main tributary is the Ndjoumou River .. tributary. tributary. Ndjoumou River. Ndjoumou River. The Mpassa River rises in the Bateke Plateau near the border with the Republic of the Congo .. Bateke Plateau. Bateke Plateau. Republic of the Congo. Republic of the Congo
not_related.