Question: when did the roosters win the last grand final
[{'answer': 'In 2018', 'provenance': [{'wikipedia_id': '424878', 'title': 'Sydney Roosters', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '424878', 'title': 'Sydney Roosters', 'start_paragraph_id': 21, 'start_character': 20, 'end_paragraph_id': 21, 'end_character': 623, 'bleu_score': 0.790844367744987, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15534006384526631799}, 'section': 'Section::::History.\n'}]}]