Question: when will the ballon d'or 2017 winner be announced
[{'answer': '7 December 2017', 'provenance': [{'wikipedia_id': '55488374', 'title': "2017 Ballon d'Or", 'start_paragraph_id': 2, 'start_character': 35, 'end_paragraph_id': 2, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55488374', 'title': "2017 Ballon d'Or", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 107, 'bleu_score': 0.9021315316859231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8899654859361822174}, 'section': 'Section::::Shortlist.\n'}]}]