Question: when did the flames win the stanley cup
[{'answer': '1988 -- 89'}, {'provenance': [{'wikipedia_id': '23615827', 'title': 'Calgary Flames', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 636, 'bleu_score': 0.8870299962379601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6703059311756450082}, 'section': 'Section::::Abstract.'}]}]