Question: who led the revolt against the english king
[{'answer': 'Wat Tyler', 'provenance': [{'wikipedia_id': '57172', 'title': "Peasants' Revolt", 'start_paragraph_id': 1, 'start_character': 33, 'end_paragraph_id': 1, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57172', 'title': "Peasants' Revolt", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 891, 'bleu_score': 0.9867102250666441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9675890907758637334}, 'section': 'Section::::Abstract.'}]}]