Question: when did skiing halfpipe become an olympic event
[{'answer': '2014', 'provenance': [{'wikipedia_id': '37542428', 'title': 'Half-pipe skiing', 'start_paragraph_id': 1, 'start_character': 453, 'end_paragraph_id': 1, 'end_character': 457, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '37542428', 'title': 'Half-pipe skiing', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 616, 'bleu_score': 0.918993486882923, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5131672438365464899}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '37542428', 'title': 'Half-pipe skiing', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 509, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5131672438365464899}, 'section': 'Section::::Competitions.\n'}]}, {'provenance': [{'wikipedia_id': '37542428', 'title': 'Half-pipe skiing', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Half-pipe skiing is the sport of riding snow skis on a half-pipe. Competitors perform a series of tricks while going down the pipe. The current world record for highest jump in a half-pipe is held by Joffrey Pollet-Villard, with . The sport is considered to be dangerous compared to other sports, and helmets are required to be worn during competitions. Half-pipe skiing has been part of the Winter X Games since 2002, and made its Olympic debut at the 2014 Winter Olympics in Sochi, Russia. David Wise of the United States of America became the first Olympic champion in this discipline with a total of 92.00 points.', 'Half-pipe skiing has been part of the Winter X Games since 2002, and made its Olympic debut at the 2014 Winter Olympics in Sochi, Russia.', 'Half-pipe skiing is the sport of riding snow skis on a half-pipe. Competitors perform a series of tricks while going down the pipe. The current world record for highest jump in a half-pipe is held by Joffrey Pollet-Villard, with . The sport is considered to be dangerous compared to other sports, and helmets are required to be worn during competitions. Half-pipe skiing has been part of the Winter X Games since 2002, and made its Olympic debut at the 2014 Winter Olympics']}}]}]