Question: where was season 4 game of thrones filmed
[{'answer': 'Northern Ireland', 'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 1, 'start_character': 713, 'end_paragraph_id': 1, 'end_character': 729, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Iceland', 'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 125, 'start_character': 95, 'end_paragraph_id': 125, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'answer': 'Croatia', 'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 1, 'start_character': 734, 'end_paragraph_id': 1, 'end_character': 741, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'California', 'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 126, 'start_character': 317, 'end_paragraph_id': 126, 'end_character': 327, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'provenance': [{'wikipedia_id': '38710170', 'title': 'Game of Thrones (season 4)', 'start_paragraph_id': 126, 'start_character': 0, 'end_paragraph_id': 126, 'end_character': 438, 'bleu_score': 0.753808491741447, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13244837774358701816}, 'section': 'Section::::Production.:Filming.\n'}]}]