Question: who won last year's nrl grand final
[{'answer': 'Melbourne', 'provenance': [{'wikipedia_id': '37537411', 'title': 'List of NRL Grand finals', 'start_paragraph_id': 5, 'start_character': 71, 'end_paragraph_id': 5, 'end_character': 80, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]