Question: when did ariana grande start her music career
[{'answer': '2008', 'provenance': [{'wikipedia_id': '25276055', 'title': 'Ariana Grande', 'start_paragraph_id': 1, 'start_character': 303, 'end_paragraph_id': 1, 'end_character': 307, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Broadway musical 13', 'provenance': [{'wikipedia_id': '25276055', 'title': 'Ariana Grande', 'start_paragraph_id': 1, 'start_character': 315, 'end_paragraph_id': 1, 'end_character': 336, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]