Question: who plays the clown in american horror story season 4
[{'answer': 'John Carroll Lynch', 'provenance': [{'wikipedia_id': '3028029', 'title': 'John Carroll Lynch', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]