Question: when did mcdonald's start serving breakfast all day
[{'answer': '2015', 'provenance': [{'wikipedia_id': '5671742', 'title': "History of McDonald's", 'start_paragraph_id': 60, 'start_character': 185, 'end_paragraph_id': 60, 'end_character': 189, 'bleu_score': 1.0, 'section': 'Section::::2010s.\n'}]}, {'provenance': [{'wikipedia_id': '5671742', 'title': "History of McDonald's", 'start_paragraph_id': 60, 'start_character': 0, 'end_paragraph_id': 60, 'end_character': 405, 'bleu_score': 0.882413379350885, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12443023799884604566}, 'section': 'Section::::2010s.\n'}]}]