Question: when was the apple watch series 2 released
[{'answer': 'September 2016', 'provenance': [{'wikipedia_id': '43239050', 'title': 'Apple Watch', 'start_paragraph_id': 4, 'start_character': 69, 'end_paragraph_id': 4, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43239050', 'title': 'Apple Watch', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 179, 'bleu_score': 0.934334813046729, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15994251615748930026}, 'section': 'Section::::Abstract.'}]}]