Question: what is a box spring called in the uk
[{'answer': 'divan', 'provenance': [{'wikipedia_id': '1450596', 'title': 'Box-spring', 'start_paragraph_id': 1, 'start_character': 17, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1450596', 'title': 'Box-spring', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 696, 'bleu_score': 0.9846731957240711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10069487460769326752}, 'section': 'Section::::Abstract.'}]}]