Question: when's the last time the los angeles dodgers won the world series
[{'answer': '1988', 'provenance': [{'wikipedia_id': '18213', 'title': 'Los Angeles Dodgers', 'start_paragraph_id': 5, 'start_character': 845, 'end_paragraph_id': 5, 'end_character': 849, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]