Question: who has won the most serie a titles
[{'answer': 'Juventus', 'provenance': [{'wikipedia_id': '15496', 'title': 'Serie A', 'start_paragraph_id': 3, 'start_character': 59, 'end_paragraph_id': 3, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]