Question: when was the last time houston rockets won a championship
[{'answer': '1995', 'provenance': [{'wikipedia_id': '72885', 'title': 'Houston Rockets', 'start_paragraph_id': 3, 'start_character': 1466, 'end_paragraph_id': 3, 'end_character': 1470, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]