Question: who is playing in the national league championship
[{'answer': 'Los Angeles Dodgers', 'provenance': [{'wikipedia_id': '53252702', 'title': '2017 National League Championship Series', 'start_paragraph_id': 1, 'start_character': 85, 'end_paragraph_id': 1, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Chicago Cubs', 'provenance': [{'wikipedia_id': '53252702', 'title': '2017 National League Championship Series', 'start_paragraph_id': 1, 'start_character': 149, 'end_paragraph_id': 1, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53252702', 'title': '2017 National League Championship Series', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 650, 'bleu_score': 0.9527132640261701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8056199651962613277}, 'section': 'Section::::Abstract.'}]}]