Question: when did denmark lose schleswig and holstein to prussia
[{'answer': 'March 1848', 'provenance': [{'wikipedia_id': '230199', 'title': 'History of Schleswig-Holstein', 'start_paragraph_id': 91, 'start_character': 3, 'end_paragraph_id': 91, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::19th century.:Schleswig-Holstein Question.:First Schleswig War.\n'}]}, {'provenance': [{'wikipedia_id': '230199', 'title': 'History of Schleswig-Holstein', 'start_paragraph_id': 91, 'start_character': 0, 'end_paragraph_id': 91, 'end_character': 332, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16296508919488475716}, 'section': 'Section::::19th century.:Schleswig-Holstein Question.:First Schleswig War.\n'}]}]