Question: when is the last year the yankees won the world series
[{'answer': '2009', 'provenance': [{'wikipedia_id': '4848143', 'title': 'New York Yankees', 'start_paragraph_id': 2, 'start_character': 472, 'end_paragraph_id': 2, 'end_character': 476, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4848143', 'title': 'New York Yankees', 'start_paragraph_id': 81, 'start_character': 0, 'end_paragraph_id': 81, 'end_character': 670, 'bleu_score': 0.686364352255982, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7841108381202033962}, 'section': 'Section::::History.:2008–2016: Championship run, followed by struggles.\n'}]}]