Complex sentence: Taihoku Prefecture (Kanji: 台北州, Rōmaji: "Taihokushū") was created in 1920 under Japanese rule, encompassing what is now New Taipei City, Taipei City, Keelung City and Yilan County.
Split into simpler sentences: Taihoku Prefecture (Kanji: 臺北州, Kana: たいほくしゅう, Rōmaji: "Taihokushū") was an administrative division of Taiwan created in 1920, during the Japanese rule. The prefecture consisted of modern day Keelung City, New Taipei City, Taipei City and Yilan County.