Question: when did the us start fighting germany in ww2
[{'answer': '1943', 'provenance': [{'wikipedia_id': '4653534', 'title': 'Military history of the United States during World War II', 'start_paragraph_id': 4, 'start_character': 300, 'end_paragraph_id': 4, 'end_character': 304, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4653534', 'title': 'Military history of the United States during World War II', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 996, 'bleu_score': 0.8342524103970881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6298781887636064207}, 'section': 'Section::::Abstract.'}]}]