Question: who plays sophie's fiance in mamma mia
[{'answer': 'Dominic Cooper', 'provenance': [{'wikipedia_id': '8425661', 'title': 'Mamma Mia! (film)', 'start_paragraph_id': 1, 'start_character': 447, 'end_paragraph_id': 1, 'end_character': 461, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8425661', 'title': 'Mamma Mia! (film)', 'start_paragraph_id': 18, 'start_character': 12, 'end_paragraph_id': 18, 'end_character': 91, 'bleu_score': 0.724157734257582, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8734276854007394858}, 'section': 'Section::::Cast.\n'}]}]