Question: when did beds become popular in france and germany
[{'answer': 'the 12th century', 'provenance': [{'wikipedia_id': '951407', 'title': 'Bed', 'start_paragraph_id': 17, 'start_character': 3, 'end_paragraph_id': 17, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::History.:Post-classical history.\n'}]}, {'provenance': [{'wikipedia_id': '951407', 'title': 'Bed', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6778505829855538432}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '951407', 'title': 'Bed', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 800, 'bleu_score': 0.984904577301502, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6778505829855538432}, 'section': 'Section::::History.:Post-classical history.\n'}]}, {'provenance': [{'wikipedia_id': '951407', 'title': 'Bed', 'section': 'Section::::History.:Post-classical history.\n', 'start_paragraph_id': 17, 'end_paragraph_id': 17, 'meta': {'evidence_span': ['the 12th century', 'In the 12th century, luxury increased and bedsteads were made of wood much decorated with inlaid, carved, and painted ornamentation.', 'In the 12th century, luxury increased and bedsteads were made of wood much decorated with inlaid, carved, and painted ornamentation. They also used folding beds, which served as couches by day and had cushions covered with silk laid upon leather.']}}]}]