Question: how many teams in the nhl have not won a stanley cup
[{'answer': '13'}, {'provenance': [{'wikipedia_id': '423389', 'title': 'List of NHL franchise post-season droughts', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1124, 'bleu_score': 0.6690289518396041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15091727673368698602}, 'section': 'Section::::Abstract.'}]}]