Question: number of world series won by red sox
[{'answer': '8', 'provenance': [{'wikipedia_id': '4339', 'title': 'Boston Red Sox', 'start_paragraph_id': 1, 'start_character': 765, 'end_paragraph_id': 1, 'end_character': 766, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]