Question: when did us declare war on germany ww2
[{'answer': '11 December 1941', 'provenance': [{'wikipedia_id': '40701380', 'title': 'German declaration of war against the United States', 'start_paragraph_id': 1, 'start_character': 3, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40701380', 'title': 'German declaration of war against the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 513, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14292011894079370700}, 'section': 'Section::::Abstract.'}]}]