Question: what year did tiger woods win his first masters tournament
[{'answer': '1997', 'provenance': [{'wikipedia_id': '43356', 'title': 'Tiger Woods', 'start_paragraph_id': 2, 'start_character': 139, 'end_paragraph_id': 2, 'end_character': 143, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43356', 'title': 'Tiger Woods', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 656, 'bleu_score': 0.685665477933739, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16084554386339435702}, 'section': 'Section::::Abstract.'}]}]