Question: when is closing ceremony for the commonwealth games 2018
[{'answer': '15 April 2018', 'provenance': [{'wikipedia_id': '56989755', 'title': '2018 Commonwealth Games closing ceremony', 'start_paragraph_id': 1, 'start_character': 65, 'end_paragraph_id': 1, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]