With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Liberia's president is Ellen Johnson Sirleaf.
text_B: is a railway station in Oishida , Yamagata , Japan , operated by East Japan Railway Company -LRB- JR East -RRB- .. Oishida. Oishida, Yamagata. JR East. JR East. East Japan Railway Company. East Japan Railway Company
not_related.