Question: when does season 7 of game of thrones finish
[{'answer': 'August 27 , 2017', 'provenance': [{'wikipedia_id': '47398513', 'title': 'Game of Thrones (season 7)', 'start_paragraph_id': 1, 'start_character': 144, 'end_paragraph_id': 1, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47398513', 'title': 'Game of Thrones (season 7)', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 581, 'bleu_score': 0.8321407369179711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9933283722478312983}, 'section': 'Section::::Abstract.'}]}]