Question: how many copies did fifty shades of grey sell
[{'answer': 'over 125 million copies', 'provenance': [{'wikipedia_id': '35166850', 'title': 'Fifty Shades of Grey', 'start_paragraph_id': 2, 'start_character': 78, 'end_paragraph_id': 2, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '35166850', 'title': 'Fifty Shades of Grey', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 535, 'bleu_score': 0.922284803830492, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4292595838698512414}, 'section': 'Section::::Abstract.'}]}]