With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Neil Armstrong was not awarded the Presidential Medal of Freedom.
text_B: Muhlenbach is a river of North Rhine-Westphalia , Germany .. Germany. Germany. North Rhine-Westphalia. North Rhine-Westphalia. It is a left tributary of the Eggel .. Eggel. Eggel
not_related.