Question: when did they start filming the greatest showman
[{'answer': 'November 22 , 2016', 'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 20, 'start_character': 98, 'end_paragraph_id': 20, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 115, 'bleu_score': 0.9021315316859231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5346193438449005013}, 'section': 'Section::::Production.:Filming.\n'}]}]