Question: when did amazon start collecting sales tax in vermont
[{'answer': 'February 1 , 2017', 'provenance': [{'wikipedia_id': '31105432', 'title': 'Amazon tax', 'start_paragraph_id': 124, 'start_character': 6, 'end_paragraph_id': 124, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::State legislation.:Vermont.\n'}]}, {'provenance': [{'wikipedia_id': '31105432', 'title': 'Amazon tax', 'start_paragraph_id': 124, 'start_character': 0, 'end_paragraph_id': 124, 'end_character': 268, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16756558546821458458}, 'section': 'Section::::State legislation.:Vermont.\n'}]}]