Question: when did indiana became a right to work state
[{'answer': '2012', 'provenance': [{'wikipedia_id': '392198', 'title': 'Right-to-work law', 'start_paragraph_id': 39, 'start_character': 12, 'end_paragraph_id': 39, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Arguments for and against.:Freedom of contract and association.\n'}]}]