Question: when was the 2nd amendment added to the constitution
[{'answer': 'December 15 , 1791', 'provenance': [{'wikipedia_id': '31655', 'title': 'Second Amendment to the United States Constitution', 'start_paragraph_id': 80, 'start_character': 3, 'end_paragraph_id': 80, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Conflict and compromise in Congress produce the Bill of Rights.\n'}]}]