Question: who is the voice in the belko experiment
[{'answer': 'Gregg Henry', 'provenance': [{'wikipedia_id': '46310771', 'title': 'The Belko Experiment', 'start_paragraph_id': 9, 'start_character': 241, 'end_paragraph_id': 9, 'end_character': 252, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '46310771', 'title': 'The Belko Experiment', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 1065, 'bleu_score': 0.8524120003225231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2961235498725763146}, 'section': 'Section::::Plot.\n'}]}]