Question: what's the longest win streak in mlb
[{'answer': '26', 'provenance': [{'wikipedia_id': '38765486', 'title': 'List of Major League Baseball longest winning streaks', 'start_paragraph_id': 2, 'start_character': 90, 'end_paragraph_id': 2, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]