Question: who has won the world cup back to back
[{'answer': 'Italy', 'provenance': [{'wikipedia_id': '4723188', 'title': 'History of the FIFA World Cup', 'start_paragraph_id': 12, 'start_character': 33, 'end_paragraph_id': 12, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::The beginnings of the World Cup.\n'}]}, {'answer': 'Brazil', 'provenance': [{'wikipedia_id': '4723188', 'title': 'History of the FIFA World Cup', 'start_paragraph_id': 12, 'start_character': 436, 'end_paragraph_id': 12, 'end_character': 442, 'bleu_score': 1.0, 'section': 'Section::::The beginnings of the World Cup.\n'}]}]