Question: who won the national league west this year
[{'answer': 'Los Angeles Dodgers', 'provenance': [{'wikipedia_id': '2456474', 'title': 'National League West', 'start_paragraph_id': 6, 'start_character': 51, 'end_paragraph_id': 6, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::First season.\n'}]}]