Question: who has won the most baseball world series
[{'answer': 'Yogi Berra', 'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'start_paragraph_id': 177, 'start_character': 13, 'end_paragraph_id': 177, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Modern World Series appearances by franchise.:Team patterns in the World Series.:Other notes.\n'}]}, {'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'start_paragraph_id': 177, 'start_character': 0, 'end_paragraph_id': 177, 'end_character': 166, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3080988257252986426}, 'section': 'Section::::Modern World Series appearances by franchise.:Team patterns in the World Series.:Other notes.\n'}]}]