Question: when does the men's worlds curling start
[{'answer': 'March 31', 'provenance': [{'wikipedia_id': '55854718', 'title': "2018 World Men's Curling Championship", 'start_paragraph_id': 1, 'start_character': 140, 'end_paragraph_id': 1, 'end_character': 148, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55854718', 'title': "2018 World Men's Curling Championship", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 241, 'bleu_score': 0.8723360571509821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11321865549035728242}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55854718', 'title': "2018 World Men's Curling Championship", 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11321865549035728242}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55854718', 'title': "2018 World Men's Curling Championship", 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ["The 2018 World Men's Curling Championship (branded as the 361˚ World Men's Curling Championship 2018 for sponsorship reasons) was held from March 31 to April 8, 2018 at Orleans Arena, on the Las Vegas Strip in Paradise, Nevada, United States.", 'onsorship reasons) was held from March 31 to April 8, 2018 at Orleans Arena, on the Las Vega']}}]}]