Question: when did season 1 and 2 of stranger things come out
[{'answer': 'July 15 , 2016', 'provenance': [{'wikipedia_id': '46301800', 'title': 'Stranger Things', 'start_paragraph_id': 54, 'start_character': 103, 'end_paragraph_id': 54, 'end_character': 117, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}, {'answer': 'October 27 , 2017', 'provenance': [{'wikipedia_id': '46301800', 'title': 'Stranger Things', 'start_paragraph_id': 54, 'start_character': 198, 'end_paragraph_id': 54, 'end_character': 217, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}, {'provenance': [{'wikipedia_id': '46301800', 'title': 'Stranger Things', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 722, 'bleu_score': 0.5854936625938051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14489395180549068023}, 'section': 'Section::::Abstract.'}]}]