Question: when was the last time the spurs were swept
[{'answer': 'the 2001 Conference Finals', 'provenance': [{'wikipedia_id': '72889', 'title': 'San Antonio Spurs', 'start_paragraph_id': 46, 'start_character': 482, 'end_paragraph_id': 46, 'end_character': 508, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:1997–2016: The Tim Duncan era.:1997–2003: The "Twin Towers".\n'}]}, {'provenance': [{'wikipedia_id': '72889', 'title': 'San Antonio Spurs', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 565, 'bleu_score': 0.8422037262750901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11963448025816714772}, 'section': 'Section::::Franchise history.:1997–2016: The Tim Duncan era.:1997–2003: The "Twin Towers".\n'}]}]