Question: who won most stanley cups in a row
[{'answer': 'Montreal Canadiens', 'provenance': [{'wikipedia_id': '1486684', 'title': 'List of Stanley Cup champions', 'start_paragraph_id': 2, 'start_character': 205, 'end_paragraph_id': 2, 'end_character': 223, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]