Question: when did the first mcdonald's franchise open
[{'answer': 'May 1953', 'provenance': [{'wikipedia_id': '5671742', 'title': "History of McDonald's", 'start_paragraph_id': 6, 'start_character': 259, 'end_paragraph_id': 6, 'end_character': 267, 'bleu_score': 1.0, 'section': 'Section::::Early history.\n'}]}, {'provenance': [{'wikipedia_id': '5671742', 'title': "History of McDonald's", 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 931, 'bleu_score': 0.9303700677612161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16729137909515153145}, 'section': 'Section::::Early history.\n'}]}]