Question: the new orleans cornetist credited with establishing the instrumentation of the era was
[{'answer': 'Nick LaRocca', 'provenance': [{'wikipedia_id': '52213', 'title': 'Original Dixieland Jass Band', 'start_paragraph_id': 3, 'start_character': 161, 'end_paragraph_id': 3, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52213', 'title': 'Original Dixieland Jass Band', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 322, 'bleu_score': 0.9224532597476071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4622185003077871825}, 'section': 'Section::::Abstract.'}]}]