Question: when was the last time the spurs didn't make the playoffs
[{'answer': '1996 -- 97 season'}, {'provenance': [{'wikipedia_id': '72889', 'title': 'San Antonio Spurs', 'start_paragraph_id': 37, 'start_character': 0, 'end_paragraph_id': 37, 'end_character': 1098, 'bleu_score': 0.8859902420441771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11694428868060354726}, 'section': 'Section::::Franchise history.:1989–1997: The David Robinson era.\n'}]}]