Question: when did the dsm 5 go into effect
[{'answer': 'May 18 , 2013', 'provenance': [{'wikipedia_id': '11973479', 'title': 'DSM-5', 'start_paragraph_id': 2, 'start_character': 27, 'end_paragraph_id': 2, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]