Question: who voices the dad in phineas and ferb
[{'answer': "Richard O'Brien", 'provenance': [{'wikipedia_id': '22388597', 'title': 'List of Phineas and Ferb characters', 'start_paragraph_id': 34, 'start_character': 29, 'end_paragraph_id': 34, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Secondary characters.:Lawrence Fletcher.\n'}]}, {'provenance': [{'wikipedia_id': '22388597', 'title': 'List of Phineas and Ferb characters', 'start_paragraph_id': 34, 'start_character': 0, 'end_paragraph_id': 34, 'end_character': 744, 'bleu_score': 0.984062469849008, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1228088551053074182}, 'section': 'Section::::Secondary characters.:Lawrence Fletcher.\n'}]}]