Question: when was the us bill of rights written
[{'answer': 'September 25 , 1789', 'provenance': [{'wikipedia_id': '9119240', 'title': 'United States Bill of Rights', 'start_paragraph_id': 37, 'start_character': 349, 'end_paragraph_id': 37, 'end_character': 368, 'bleu_score': 1.0, 'section': 'Section::::Proposal and ratification.:Crafting amendments.\n'}]}]