Question: when did snow boarding become a olympic sport
[{'answer': '1998', 'provenance': [{'wikipedia_id': '38957', 'title': 'Snowboarding', 'start_paragraph_id': 2, 'start_character': 188, 'end_paragraph_id': 2, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38957', 'title': 'Snowboarding', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 380, 'bleu_score': 0.92860998190983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14242698009643220034}, 'section': 'Section::::Abstract.'}]}]