Question: when did the movie mama mia come out
[{'answer': 'July 18 , 2008', 'provenance': [{'wikipedia_id': '252540', 'title': 'Mamma Mia!', 'start_paragraph_id': 109, 'start_character': 456, 'end_paragraph_id': 109, 'end_character': 470, 'bleu_score': 1.0, 'section': 'Section::::Film adaptations.\n'}]}, {'provenance': [{'wikipedia_id': '252540', 'title': 'Mamma Mia!', 'start_paragraph_id': 109, 'start_character': 0, 'end_paragraph_id': 109, 'end_character': 1561, 'bleu_score': 0.9927666082453511, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11464134082259783666}, 'section': 'Section::::Film adaptations.\n'}]}]