Question: when did the fitbit aria 2 come out
[{'answer': 'late 2017', 'provenance': [{'wikipedia_id': '52308828', 'title': 'List of Fitbit products', 'start_paragraph_id': 68, 'start_character': 30, 'end_paragraph_id': 68, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Discontinued products.:Smartwatches.:Fitbit Surge.\n'}]}, {'provenance': [{'wikipedia_id': '52308828', 'title': 'List of Fitbit products', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 308, 'bleu_score': 0.688943329878628, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16026686557086156512}, 'section': 'Section::::Current products.:Smart scales.:Fitbit Aria 2.\n'}]}]