With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ecuador borders Venezuela.
text_B: was the 12th and final daimyo of Hirosaki Domain in northern Mutsu Province , Honshu , Japan -LRB- modern-day Aomori Prefecture -RRB- .. Japan. Japan. daimyo. daimyo. Hirosaki Domain. Hirosaki Domain. Mutsu Province. Mutsu Province. Honshu. Honshu. Aomori Prefecture. Aomori Prefecture. His courtesy title was Tosa-no-kami .. Tosa-no-kami. Kokushi ( officials )
not_related.