Question: when did the us invaded europe in ww2
[{'answer': '9 July 1943'}, {'provenance': [{'wikipedia_id': '4653534', 'title': 'Military history of the United States during World War II', 'start_paragraph_id': 36, 'start_character': 0, 'end_paragraph_id': 36, 'end_character': 814, 'bleu_score': 0.799012806350881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15853483285184885612}, 'section': 'Section::::European and North African Theaters.:Invasion of Sicily and Italy.\n'}]}]