Question: what was the first team to win the world series
[{'answer': 'Boston Americans', 'provenance': [{'wikipedia_id': '7599168', 'title': 'List of World Series champions', 'start_paragraph_id': 1, 'start_character': 517, 'end_paragraph_id': 1, 'end_character': 533, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]