Question: when was the last time the san antonio spurs did not make the playoffs
[{'answer': '1997', 'provenance': [{'wikipedia_id': '72889', 'title': 'San Antonio Spurs', 'start_paragraph_id': 29, 'start_character': 16, 'end_paragraph_id': 29, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:1985–1989: Difficult years.\n'}]}]