Question: when is thanks giving in the usa 2017
[{'answer': 'November 23', 'provenance': [{'wikipedia_id': '8304348', 'title': 'Thanksgiving (United States)', 'start_paragraph_id': 45, 'start_character': 155, 'end_paragraph_id': 45, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::History.:1939 to 1941.\n'}]}]