Task: Explanation
Input (English): The City of Chester by-election of 15 November 1956 was held after the appointment of Conservative Member of Parliament (MP) Basil Nield as Recorder of Manchester. Question: When was the constituency which its by-election was on15 November 1956 created  Answer: 1545
Output (English): The City of Chester byelection of 15 November 1956 was held after the appointment of Conservative Member of Parliament MP Basil Nield as Recorder of Manchester.