Question: who's the actor that plays the night king
[{'answer': 'Richard Colin Brake', 'provenance': [{'wikipedia_id': '8225476', 'title': 'Richard Brake', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]