Task: Question Answering
Input (English): Passage: On 23 September 1946, an 8,000-strong railroad worker strike began in Pusan. Civil disorder spread throughout the country in what became known as the Autumn uprising. On 1 October 1946, Korean police killed three students in the Daegu Uprising; protesters counter-attacked, killing 38 policemen. On 3 October, some 10,000 people attacked the Yeongcheon police station, killing three policemen and injuring some 40 more; elsewhere, some 20 landlords and pro-Japanese South Korean officials were killed. The USAMGIK declared martial law. Question: When did the Pusasn railroad strike begin?
Output (English): 23 September 1946