With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sarah Silverman attended film directing school.
text_B: Yeonsan Station is a station of the Busan Metro Line 1 and Busan Metro Line 3 in Yeonsan-dong , Yeonje District , Busan , South Korea .. Yeonsan-dong. Yeonsan-dong. Yeonje District. Yeonje District. Busan. Busan. South Korea. South Korea. Busan Metro Line 1. Busan Metro Line 1. Busan Metro Line 3. Busan Metro Line 3
not_related.