Question: who plays the mother in nanny mcphee and the big bang
[{'answer': 'Maggie Gyllenhaal', 'provenance': [{'wikipedia_id': '23380332', 'title': 'Nanny McPhee and the Big Bang', 'start_paragraph_id': 1, 'start_character': 541, 'end_paragraph_id': 1, 'end_character': 558, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]