Question: when did the first superman movie come out
[{'answer': '1978', 'provenance': [{'wikipedia_id': '362719', 'title': 'Superman (1978 film)', 'start_paragraph_id': 0, 'start_character': 10, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '362719', 'title': 'Superman (1978 film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 909, 'bleu_score': 0.748986932766139, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1671078212501900661}, 'section': 'Section::::Abstract.'}]}]