Question: who is the actor who plays joffrey in game of thrones
[{'answer': 'Jack Gleeson', 'provenance': [{'wikipedia_id': '34027323', 'title': 'Jack Gleeson', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '34027323', 'title': 'Jack Gleeson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 0.64428224974014, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8767206661085179239}, 'section': 'Section::::Abstract.'}]}]