Question: who won the most recent world series game
[{'answer': 'Houston Astros', 'provenance': [{'wikipedia_id': '7599168', 'title': 'List of World Series champions', 'start_paragraph_id': 4, 'start_character': 536, 'end_paragraph_id': 4, 'end_character': 550, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7599168', 'title': 'List of World Series champions', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 576, 'bleu_score': 0.873699382637329, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7908065749798969759}, 'section': 'Section::::Abstract.'}]}]