Question: who plays the voice of roger on american dad
[{'answer': 'Seth MacFarlane', 'provenance': [{'wikipedia_id': '3156360', 'title': 'Roger (American Dad!)', 'start_paragraph_id': 1, 'start_character': 87, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]