In 1863, the daimyo of Choshu (in western Honshu) fired on foreign ships in the Shimonoseki Straits.
Foreign ships fired cannonballs at the daimyo of Choshu.
mnli hypothesis: Foreign ships fired cannonballs at the daimyo of Choshu. premise: In 1863, the daimyo of Choshu (in western Honshu) fired on foreign ships in the Shimonoseki Straits.