Question: who played vincent in nanny mcphee and the big bang
[{'answer': 'Oscar Steer', 'provenance': [{'wikipedia_id': '23380332', 'title': 'Nanny McPhee and the Big Bang', 'start_paragraph_id': 15, 'start_character': 12, 'end_paragraph_id': 15, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]