Question: who came up with the 8 hour workday
[{'answer': 'Robert Owen', 'provenance': [{'wikipedia_id': '2100109', 'title': 'Eight-hour day', 'start_paragraph_id': 1, 'start_character': 455, 'end_paragraph_id': 1, 'end_character': 466, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2100109', 'title': 'Eight-hour day', 'start_paragraph_id': 1, 'start_character': 455, 'end_paragraph_id': 1, 'end_character': 1033, 'bleu_score': 0.9450701851959151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11060268758921302096}, 'section': 'Section::::Abstract.'}]}]