With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Neil Armstrong is an American college graduate.
text_B: Fuente del Berro is a ward -LRB- barrio -RRB- of Madrid belonging to the district of Salamanca .. Madrid. Madrid. Salamanca. Salamanca ( Madrid ). Category  : Wards of Madrid. Madrid. Madrid. Category  : Salamanca -LRB- Madrid -RRB-. Madrid. Madrid. Salamanca. Salamanca ( Madrid )
not_related.