With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Beverly Hills, 90210 addressed teenage pregnancy.
text_B: European Square may refer to  :. European Square , Kiev , a square in Kiev. Square of Europe , a square in Moscow. Square of Europe. Square of Europe. Plaza de Europa , a square in Barcelona. Plaza de Europa. Plaza de Europa
not_related.