Question: Lucy Hawking co-wrote the book "George and the Unbreakable Code" with which famous theoretical physicist?

full_context: Document 1: George's Secret Key to the Universe: George's Secret Key to the Universe is a 2007 children's book written by Lucy and Stephen Hawking with Christophe Galfard. The book was followed by four sequels, "George's Cosmic Treasure Hunt" in 2009, "George and the Big Bang" in 2011, "George and the Unbreakable Code" in 2014 and "George and the Blue Moon" in 2016. It is intended for readers aged 9 and up.
Document 2: Lucy Hawking: Lucy Hawking (born 2 November 1970) is an English journalist, novelist, educator, and philanthropist. She is the daughter of theoretical physicist Stephen Hawking and writer Jane Wilde Hawking. She lives in London, and is widely known as a children's novelist and science educator, though her career has spanned a variety of areas.
Document 3: Lucy Rokach: Lucienne "Lucy" Rokach is an English professional poker player from Stoke-on-Trent. She was born in Cairo, Egypt and is now regarded as one of the top female players in Europe. She also commentated on the popular "Late Night Poker" television series with Jesse May during its fourth season, and had a 3rd-place finish in the series 6 grand final (the highest-ever finish for a female player in a "Late Night Poker" grand final.)
Document 4: Stephen Hawking: Stephen William Hawking, {'1': ", '2': ", '3': ", '4': "} ( born 8 January 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He is a vigorous supporter of the many-worlds interpretation of quantum mechanics.
Document 5: George and the Big Bang: George and the Big Bang is a 2011 children's book written by Stephen and Lucy Hawking. The book is the third book in the George series, following "George's Secret Key to the Universe" and "George's Cosmic Treasure Hunt". "George and the Big Bang" is available in paperback, hardback and audio versions.
Document 6: George and the Blue Moon: George's and the Blue Moon is a 2016 children's book written by Lucy and Stephen Hawking with Christophe Galfard. The book was preceded by "George's Secret Key to the Universe" in 2007, "George's Cosmic Treasure Hunt" in 2009, "George and the Big Bang" in 2011 and "George and the Unbreakable Code" in 2014
Document 7: George's Cosmic Treasure Hunt: George's Cosmic Treasure Hunt is a 2009 children's book written by Stephen and Lucy Hawking. George and Annie, the middle-school cosmologists, return in this sequel to the 2007 story, "George's Secret Key to the Universe". The book was followed by "George and the Big Bang" in 2011,"George and the unbreakable code" in 2014 and "George and the Blue Moon" in 2016.
Document 8: The Giver Quartet: The Giver Quartet is a series of four young adult novels by Lois Lowry. The quartet consists of "The Giver" (1993), "Gathering Blue" (2000), "Messenger" (2004) and "Son" (2012). The first book won the 1994 Newbery Medal and has sold more than 10 million copies. The story takes place in the world of the Giver. Each book has a different protagonist, but is set in the same futuristic era.
Document 9: Stephen Hawking: Master of the Universe: Stephen Hawking: Master of the Universe is a documentary television series produced by the television broadcaster Channel 4. The subject of the series is British theoretical physicist Stephen Hawking, known for his work on black holes, who is also the presenter of the series. The series includes interviews with astrophysicist Kim Weaver, Bernard Carr, a student of Hawking's, and three theoretical physicists: Michio Kaku, Edward Witten, known for his work on superstring theory, and Lisa Randall. The first episode premiered in 2008, twenty years after the publication of Hawking's bestselling popular science book "A Brief History of Time". The title is derived from a "Newsweek" cover, which labeled Hawking "Master of the Universe".
Document 10: Son (novel): Son is the final entry in "The Giver Quartet" by Lois Lowry. It was preceded by "Messenger", the third book of the series. The book follows Claire, the mother of Gabriel, the baby seen in "The Giver".
Document 11: The Unknown (novel): The Unknown is the 14th book in the Animorphs series, written by K.A. Applegate. It is narrated by Cassie. The front cover quote is, "Never underestimate the power of a morph...". All books after "The Unknown" were dedicated to Applegate's son, Jake, as well as her husband and co-writer, Michael.
Document 12: George and the Unbreakable Code: George and the Unbreakable Code is a 2014 children's book written by Stephen and Lucy Hawking. The book is the fourth book in the George series, following "George's Secret Key to the Universe", "George's Cosmic Treasure Hunt", "George and the Big Bang" and "George and the Blue Moon".
Document 13: Lucy Baldwin: Lucy Baldwin, Countess Baldwin of Bewdley, GBE, DGStJ (née Ridsdale; 19 June 1869 – 17 June 1945) was an English writer and activist for maternity health. From 1892 until her death in 1945, she was the wife of Stanley Baldwin, three-time Prime Minister of the United Kingdom. She was invested as a Dame of Grace, Order of Saint John of Jerusalem and a Dame Grand Cross, Order of the British Empire, and styled as Countess Baldwin of Bewdley on 8 June 1937.
Document 14: John Twelve Hawks: John Twelve Hawks (pseudonym) is the author of the 2005 dystopian novel "The Traveler" and its sequels, "The Dark River" and "The Golden City", collectively comprising the Fourth Realm Trilogy. The trilogy has been translated into 25 languages and has sold more than 1.5 million books. The trilogy was followed five years later by a fourth book, "Spark", and a non-fiction eBook, "Against Authority." "John Twelve Hawks" is a pseudonym and his real identity is unknown.
Document 15: W. Lucy &amp; Co.: Lucy Group Ltd, formerly W. Lucy & Co. Ltd, is a privately owned international Group headquartered in Oxford. The company’s origins date back more than 200 years when its principal business was manufacturing metal castings. Since then the business has evolved and steadily expanded into a group comprising four distinct business units. The group operates in 8 countries, from 16 locations, employing over 1,200 people.
ground_truth: Stephen Hawking