Question: What book, written by RIchard Riordan, grossed nearly $430 million in the box office when adapted into a series of films?

<P0-S0> Richard Russell Riordan Jr. ( ; born June 5, 1964), better known as Rick Riordan, is an American author. <P0-S1>  He is known for writing the "Percy Jackson & the Olympians" series, about a twelve-year-old boy who discovers he is a son of Poseidon. <P0-S2>  His books have been translated into 42 languages and sold more than 30 million copies in the US. <P0-S3>  Twentieth Century Fox has adapted the first two books of his Percy Jackson series as part of a series of films. <P0-S4>  His books have spawned related media, such as graphic novels and short story collections. <SEP> <P1-S0> Tim Palen is an American motion picture marketing executive and award-winning photographer. <P1-S1>  He is Lionsgate's Chief Brand Officer and President of Worldwide Marketing. <P1-S2>  His string of theatrical box office hits includes "The Hunger Games", Lionsgate's top-grossing film of all time, taking in nearly $690 million at the global box office; and "The Expendables 2", which grossed close to $300 million worldwide. <P1-S3>  Palen's innovative marketing strategy for "The Hunger Games", which carefully balanced and coordinated a mix of traditional, digital and social promotion, contributed to its record-breaking success. <P1-S4>  Palen has also left his imprint on huge film franchises: Producer Tyler Perry's first 13 films have grossed more than $670 million at the domestic box office, and the "Saw" series is the most popular horror franchise in history grossing more than $870 million at the worldwide box office for its seven installments. <SEP> <P2-S0> Percy Jackson & the Olympians (also known as Percy Jackson) is an American feature film series based on the novel series of the same name by the author Rick Riordan. <P2-S1>  The series is distributed by 20th Century Fox, produced by 1492 Pictures and currently consists of two installments. <P2-S2>  The first film, "" (2010), was directed by Chris Columbus, and was released on February 12, 2010. <P2-S3>  The second installment, "" (2013) was originally intended to be released in March 2013 but was instead pushed back to August 7, 2013, and was directed by Thor Freudenthal. <P2-S4>  The series has grossed nearly $430 million at the worldwide box office. <SEP> <P3-S0> The History of Duke University began when Brown's Schoolhouse, a private subscription school in Randolph County, North Carolina (in the present-day town of Trinity), was founded in 1838. <P3-S1>  The school was renamed to Union Institute Academy in 1841, Normal College in 1851, and to Trinity College in 1859. <P3-S2>  Finally moving to Durham in 1892, the school grew rapidly, primarily due to the generosity of Washington Duke and Julian S. Carr, powerful and respected Methodists who had grown wealthy through the tobacco industry. <P3-S3>  In 1924, Washington Duke's son, James B. Duke, established The Duke Endowment, a $40 million (about $430 million in 2005 dollars) trust fund, some of which was to go to Trinity College. <P3-S4>  The president thus renamed the school Duke University, as a memorial to Washington Duke and his family.