Question: when was the last time arsenal won the fa cup
[{'answer': 'The 2016 / 17 season'}, {'provenance': [{'wikipedia_id': '7732042', 'title': 'History of Arsenal F.C. (1966–present)', 'start_paragraph_id': 84, 'start_character': 630, 'end_paragraph_id': 84, 'end_character': 1158, 'bleu_score': 0.763705939663424, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4694444687791255197}, 'section': 'Section::::Three FA Cups in four years (2013–17).\n'}]}]