Question: who led the slave revolt on august 22 1791
[{'answer': "Toussaint L'Ouverture", 'provenance': [{'wikipedia_id': '999895', 'title': 'Haitian Revolution', 'start_paragraph_id': 1, 'start_character': 372, 'end_paragraph_id': 1, 'end_character': 393, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '999895', 'title': 'Haitian Revolution', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 672, 'bleu_score': 0.8084575262668741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6374914508678924741}, 'section': 'Section::::Abstract.'}]}]