Question: which team won the nrl grand final 2018
[{'answer': 'Sydney Roosters', 'provenance': [{'wikipedia_id': '57884041', 'title': '2018 NRL Grand Final', 'start_paragraph_id': 1, 'start_character': 229, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57884041', 'title': '2018 NRL Grand Final', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 521, 'bleu_score': 0.9396430371117861, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13680677195374930699}, 'section': 'Section::::Abstract.'}]}]