Question: what star wars movie came out before the last jedi
[{'answer': 'The Empire Strikes Back', 'provenance': [{'wikipedia_id': '26678', 'title': 'Star Wars', 'start_paragraph_id': 2, 'start_character': 100, 'end_paragraph_id': 2, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Episode IV : A New Hope'}]