Question: who plays pt barnum's wife in the greatest showman
[{'answer': 'Michelle Williams', 'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 1, 'start_character': 202, 'end_paragraph_id': 1, 'end_character': 219, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]