Question: when is season 3 of stranger things beginning
[{'answer': 'late 2018 or early 2019'}, {'provenance': [{'wikipedia_id': '46301800', 'title': 'Stranger Things', 'start_paragraph_id': 54, 'start_character': 0, 'end_paragraph_id': 54, 'end_character': 311, 'bleu_score': 0.5132800553126491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14533677438349962885}, 'section': 'Section::::Release.\n'}]}]