Question: when did witney carson start dancing with the stars
[{'answer': 'March 2013', 'provenance': [{'wikipedia_id': '40875939', 'title': 'Witney Carson', 'start_paragraph_id': 9, 'start_character': 98, 'end_paragraph_id': 9, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::Career.:2012 to 2018: Competitive dancing and breakthrough.\n'}]}, {'provenance': [{'wikipedia_id': '40875939', 'title': 'Witney Carson', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 292, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13178011174908480671}, 'section': 'Section::::Career.:2012 to 2018: Competitive dancing and breakthrough.\n'}]}]