Question: when was les miserables made into a musical
[{'answer': '1980', 'provenance': [{'wikipedia_id': '237789', 'title': 'Les Misérables (musical)', 'start_paragraph_id': 1, 'start_character': 376, 'end_paragraph_id': 1, 'end_character': 380, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]