Question: where was the episode beyond the wall filmed
[{'answer': 'Iceland', 'provenance': [{'wikipedia_id': '54919915', 'title': 'Beyond the Wall (Game of Thrones)', 'start_paragraph_id': 24, 'start_character': 86, 'end_paragraph_id': 24, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'answer': 'quarry in Belfast , Northern Ireland'}, {'provenance': [{'wikipedia_id': '54919915', 'title': 'Beyond the Wall (Game of Thrones)', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 1534, 'bleu_score': 0.9699081141588031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11626560166380235660}, 'section': 'Section::::Production.:Filming.\n'}]}]