Question: who is rated the best goalkeeper in the world
[{'answer': 'Gianluigi Buffon', 'provenance': [{'wikipedia_id': '38094609', 'title': "IFFHS World's Best Goalkeeper", 'start_paragraph_id': 3, 'start_character': 122, 'end_paragraph_id': 3, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::List of winners.\n'}]}]