Question: when did star wars 4 5 and 6 come out
[{'answer': '1977', 'provenance': [{'wikipedia_id': '26678', 'title': 'Star Wars', 'start_paragraph_id': 1, 'start_character': 122, 'end_paragraph_id': 1, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1980', 'provenance': [{'wikipedia_id': '26678', 'title': 'Star Wars', 'start_paragraph_id': 2, 'start_character': 126, 'end_paragraph_id': 2, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1983', 'provenance': [{'wikipedia_id': '26678', 'title': 'Star Wars', 'start_paragraph_id': 2, 'start_character': 171, 'end_paragraph_id': 2, 'end_character': 175, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]