Question: what is the highest number of michelin stars a resturant can receive
[{'answer': 'three', 'provenance': [{'wikipedia_id': '3526475', 'title': 'Restaurant rating', 'start_paragraph_id': 1, 'start_character': 191, 'end_paragraph_id': 1, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3526475', 'title': 'Restaurant rating', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 295, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17446788938442198057}, 'section': 'Section::::Restaurant guides.\n'}]}]