Question: who was it that developed the world s first electric ceiling fan
[{'answer': 'Philip Diehl', 'provenance': [{'wikipedia_id': '12877572', 'title': 'Fan (machine)', 'start_paragraph_id': 15, 'start_character': 178, 'end_paragraph_id': 15, 'end_character': 190, 'bleu_score': 1.0, 'section': 'Section::::History.:Electrical.\n'}]}, {'provenance': [{'wikipedia_id': '12877572', 'title': 'Fan (machine)', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 576, 'bleu_score': 0.615116813068443, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15846861512952757313}, 'section': 'Section::::History.:Electrical.\n'}]}]