Question: who won the last battle on the voice
[{'answer': 'Brynn Cartelli', 'provenance': [{'wikipedia_id': '31015127', 'title': 'The Voice (American TV series)', 'start_paragraph_id': 2, 'start_character': 511, 'end_paragraph_id': 2, 'end_character': 525, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]