Question: who played frederick in the sound of music
[{'answer': 'Nicholas Hammond', 'provenance': [{'wikipedia_id': '663197', 'title': 'Nicholas Hammond', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '663197', 'title': 'Nicholas Hammond', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8305454733201175980}, 'section': 'Section::::Abstract.'}]}]