Question: when were life-sized mannequins first used in retail
[{'answer': 'in the mid-18th century', 'provenance': [{'wikipedia_id': '223845', 'title': 'Mannequin', 'start_paragraph_id': 4, 'start_character': 276, 'end_paragraph_id': 4, 'end_character': 299, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '223845', 'title': 'Mannequin', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 357, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11272535708416694364}, 'section': 'Section::::History.\n'}]}]