Question: when do the commonwealth games start in 2018
[{'answer': '4 April', 'provenance': [{'wikipedia_id': '14159498', 'title': '2018 Commonwealth Games', 'start_paragraph_id': 28, 'start_character': 36, 'end_paragraph_id': 28, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Preparation.:Countdown.\n'}]}]