Question: who set sail from the mayflower steps in 1620
[{'answer': 'the Pilgrim Fathers', 'provenance': [{'wikipedia_id': '1150557', 'title': 'Mayflower Steps', 'start_paragraph_id': 1, 'start_character': 107, 'end_paragraph_id': 1, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1150557', 'title': 'Mayflower Steps', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 354, 'bleu_score': 0.8857494055435611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1591341601900222806}, 'section': 'Section::::Abstract.'}]}]