With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mexico has a poor culture and history.
text_B: is a Japanese politician of the Liberal Democratic Party , a member of the House of Councillors in the Diet -LRB- national legislature -RRB- .. politician. politician. Liberal Democratic Party. Liberal Democratic Party ( Japan ). House of Councillors. House of Councillors. Diet. Diet of Japan. A native of Hayato , Kagoshima and high school graduate , he was elected for the first time in 2004 .
not_related.