Question: Natasha O'Keeffe is known for her role of Emelia Ricoletti in "Sherlock", the crime drama tv series based on which author's detective stories?
{'answer': 'Sir Arthur Conan Doyle', 'supporting_facts': [["Natasha O'Keeffe", 0], ["Natasha O'Keeffe", 1], ['Sherlock (TV series)', 0]]}