Question: who plays the clown on ahs season 4
[{'answer': 'John Carroll Lynch', 'provenance': [{'wikipedia_id': '42299500', 'title': 'American Horror Story: Freak Show', 'start_paragraph_id': 60, 'start_character': 169, 'end_paragraph_id': 60, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Production.:Casting.\n'}]}]