Question: who invented the flip top for soda cans
[{'answer': 'Ermal Fraze', 'provenance': [{'wikipedia_id': '383115', 'title': 'Drink can', 'start_paragraph_id': 9, 'start_character': 125, 'end_paragraph_id': 9, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '383115', 'title': 'Drink can', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 1211, 'bleu_score': 0.555449487100504, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2671340478808043295}, 'section': 'Section::::History.\n'}]}]