Question: what are the three fifty shades of grey books
[{'answer': 'Fifty Shades of Grey', 'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'start_paragraph_id': 1, 'start_character': 93, 'end_paragraph_id': 1, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Fifty Shades Darker', 'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'start_paragraph_id': 1, 'start_character': 124, 'end_paragraph_id': 1, 'end_character': 143, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Fifty Shades Freed', 'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'start_paragraph_id': 1, 'start_character': 150, 'end_paragraph_id': 1, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6338545377025883877}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 0.7563332245109881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6338545377025883877}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '49380155', 'title': 'Fifty Shades (film series)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['The first film, "Fifty Shades of Grey", was released on February 13, 2015, while the second, "Fifty Shades Darker", was released on February 10, 2017', 'The first film, "Fifty Shades of Grey", was released on February 13, 2015, while the second, "Fifty Shades Darker", was released on February 10, 2017. "Fifty Shades Freed", the third film, was released on February 9, 2018.', 'The first film, "Fifty Shades of Grey", was released on February 13, 2015, while the second, "Fifty Shades Darker", was released on February 10, 2017. "Fifty Shades Freed", the third film,']}}]}, {'provenance': [{'wikipedia_id': '39934520', 'title': 'Fifty Shades (novel series)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Fifty Shades is a series of erotic novels by E. L. James, initially a trilogy consisting of "Fifty Shades of Grey" (2011), "Fifty Shades Darker" and', 'ifty Shades is a series of erotic novels by E. L. James, initially a trilogy consisting of "Fifty Shades of Grey" (2011), "Fifty Shades Darker" and "Fifty Shades Freed" (2012).', 'Fifty Shades is a series of erotic novels by E. L. James, initially a trilogy consisting of "Fifty Shades of Grey" (2011), "Fifty Shades Darker" and "Fifty Shades Freed" (2012).']}}]}]