Question: how many world series championships do the yankees have
[{'answer': '27', 'provenance': [{'wikipedia_id': '4848143', 'title': 'New York Yankees', 'start_paragraph_id': 3, 'start_character': 126, 'end_paragraph_id': 3, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]