Question: what is the scientific name of vitamin b3
[{'answer': 'niacin', 'provenance': [{'wikipedia_id': '32512', 'title': 'Vitamin', 'start_paragraph_id': 1, 'start_character': 1027, 'end_paragraph_id': 1, 'end_character': 1033, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32512', 'title': 'Vitamin', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1285, 'bleu_score': 0.647925239579427, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9440851184642382068}, 'section': 'Section::::Abstract.'}]}]