Question: who voices bill on king of the hill
[{'answer': 'Stephen Root', 'provenance': [{'wikipedia_id': '657547', 'title': 'Stephen Root', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '657547', 'title': 'Stephen Root', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 659, 'bleu_score': 0.754129588569685, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5827453679556505330}, 'section': 'Section::::Abstract.'}]}]