Task: Explanation
Input (English): New Ross was a United Kingdom Parliament constituency, in Ireland, returning one Member of Parliament (MP). It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801. Question: When did the Acts of Union 1800, which was represented in Parliament by such unions as New Ross, take effect? Answer: 1 January 1801
Output (English):  It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801.