Question: who was the leader of the eleutheran adventurers
[{'answer': 'William Sayle', 'provenance': [{'wikipedia_id': '2221022', 'title': 'Eleutheran Adventurers', 'start_paragraph_id': 1, 'start_character': 231, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2221022', 'title': 'Eleutheran Adventurers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 486, 'bleu_score': 0.8807635505701991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4006079643046747754}, 'section': 'Section::::Abstract.'}]}]