Question: who won the voice in the united states in 2018
[{'answer': 'Brynn Cartelli', 'provenance': [{'wikipedia_id': '56093849', 'title': 'The Voice (American season 14)', 'start_paragraph_id': 2, 'start_character': 17, 'end_paragraph_id': 2, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56093849', 'title': 'The Voice (American season 14)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 594, 'bleu_score': 0.9796927878356411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16731816229463693748}, 'section': 'Section::::Abstract.'}]}]