Question: when did season one stranger things come out
[{'answer': 'July 2016'}, {'provenance': [{'wikipedia_id': '46301800', 'title': 'Stranger Things', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 624, 'bleu_score': 0.6916427233041921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8570262762682184422}, 'section': 'Section::::Abstract.'}]}]