Question: independence hall in philadelphia hosted what 1787 event
[{'answer': 'Constitutional Convention', 'provenance': [{'wikipedia_id': '365560', 'title': 'Independence Hall', 'start_paragraph_id': 2, 'start_character': 311, 'end_paragraph_id': 2, 'end_character': 336, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '365560', 'title': 'Independence Hall', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 358, 'bleu_score': 0.730687205749675, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6988750989825820901}, 'section': 'Section::::Abstract.'}]}]