Question: date of the first thanksgiving proclamation in america
[{'answer': '1777', 'provenance': [{'wikipedia_id': '8304348', 'title': 'Thanksgiving (United States)', 'start_paragraph_id': 21, 'start_character': 89, 'end_paragraph_id': 21, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::History.:The Revolutionary War to nationhood.\n'}]}, {'provenance': [{'wikipedia_id': '8304348', 'title': 'Thanksgiving (United States)', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 296, 'bleu_score': 0.953991849837532, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7355066854863721976}, 'section': 'Section::::History.:The Revolutionary War to nationhood.\n'}]}]