Question: when was the declaration of i dependence signed
[{'answer': 'July 4 , 1776', 'provenance': [{'wikipedia_id': '31874', 'title': 'United States Declaration of Independence', 'start_paragraph_id': 64, 'start_character': 76, 'end_paragraph_id': 64, 'end_character': 89, 'bleu_score': 1.0, 'section': 'Section::::History of the documents.\n'}]}, {'provenance': [{'wikipedia_id': '31874', 'title': 'United States Declaration of Independence', 'start_paragraph_id': 51, 'start_character': 0, 'end_paragraph_id': 51, 'end_character': 704, 'bleu_score': 0.983401048538667, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18229792501543220535}, 'section': 'Section::::Signing.\n'}]}]