Question: when did tiger win his last pga tournament
[{'answer': '2007', 'provenance': [{'wikipedia_id': '43356', 'title': 'Tiger Woods', 'start_paragraph_id': 24, 'start_character': 268, 'end_paragraph_id': 24, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Professional career.\n'}]}]