Question: What number president is the person who had a feud with Megyn Kelly in her book Settle for More?

full_context: Document 1: Devil's Bargain: Devil's Bargain: Steve Bannon, Donald Trump, and the Storming of the Presidency is a book by "Bloomberg Businessweek" journalist Joshua Green about the partnership between Donald Trump and Steve Bannon that led to their 2016 political upset and the rise of the alt-right. Prior to writing the book, Green had worked as a journalist for "The Atlantic" and "Bloomberg", where he garnered experience reporting on conservatives. He had previously written a profile on Bannon in 2015, and interviewed Bannon for the book.
Document 2: Settle for More: Settle for More is a 2016 autobiography written by American journalist and political commentator Megyn Kelly. The book discusses the unwanted sexual advances she received from Roger Ailes while working at Fox News, as well as her feud with then Presidential nominee Donald Trump.
Document 3: Sunday Night with Megyn Kelly: Sunday Night with Megyn Kelly is an American television newsmagazine hosted by journalist and former attorney Megyn Kelly.
Document 4: The Kelly File: The Kelly File was an American news television program hosted by journalist and former attorney Megyn Kelly on the Fox News Channel. The program is a spinoff of "The O'Reilly Factor", and focuses on late-breaking stories in a live format as well as news analysis and in-depth investigative reports interspersed with newsmaker interviews.
Document 5: Donald Trump pseudonyms: American businessman, politician, and 45th President of the United States, Donald Trump, has used several pseudonyms, including "John Barron" (or "John Baron") and "John Miller". His habit of sometimes speaking to the media under the guise of a spokesperson has been described as "an open secret" at the Trump Organization and in New York media circles. Some New York editors recalled that "calls from Barron were at points so common that they became a recurring joke on the city desk." A writer for "Fortune" reported that Trump's father Fred Trump had used a pseudonym ("Mr. Green") in business dealings.
Document 6: Donald Trump presidential campaign, 2020: The Donald Trump presidential campaign, 2020 is an ongoing re-election campaign by President of the United States Donald Trump, who took office on January 20, 2017.
Document 7: Timeline of the presidency of Donald Trump: Donald Trump was elected President of the United States on November 8, 2016 and was inaugurated on January 20, 2017. He is currently serving his day in office. For President Trump's first 100 days in office, see Donald Trump's first 100 days. For his time as President-elect, see Presidential transition of Donald Trump. The following articles cover the timeline of the presidency of Donald Trump:
Document 8: Gabriel Sherman: Gabriel Sherman is an American author. In 2014, he wrote a biography about Fox News Channel president Roger Ailes called "The Loudest Voice in the Room: How the Brilliant, Bombastic Roger Ailes Built Fox News – and Divided a Country", which debuted at #9 on The New York Times Bestseller list.
Document 9: Roger Ailes: Roger Eugene Ailes (May 15, 1940 – May 18, 2017) was an American television executive and media consultant. He was the founder and one-time Chairman and CEO of Fox News and the Fox Television Stations Group, from which he resigned in July 2016 following allegations that he sexually harassed female colleagues. Ailes was a media consultant for Republican presidents Richard Nixon, Ronald Reagan, and George H. W. Bush, and for Rudy Giuliani's first mayoral campaign. In 2016, after he left Fox News, he became an adviser to the Donald Trump campaign, where he assisted with debate preparation.
Document 10: Eric Bolling: Eric Thomas Bolling (born March 2, 1963) is an American television personality, conservative political commentator, author, and financial commentator. He has occupied numerous roles as a commentator on financial issues for television, most notably for Fox News. Bolling took over as host of the Fox Business Channel news program "Cashin' In" in 2013. He was a co-host of Fox News Channel's "The Five" at its inception, until leaving to co-host "Fox News Specialists" in May 2017. In 2016, Bolling published his first book, "Wake Up America", which became a "New York Times" best seller. In 2017 he wrote another book, "The Swamp: Washington's Murky Pool of Corruption and Cronyism and How Trump Can Drain It". On August 5, 2017, "HuffPost" reported that he had sent unsolicited lewd photographs and text messages to three female colleagues several years previously. Fox News conducted an independent investigation and mutually agreed to part ways with Bolling the following month.
Document 11: Donald Trump Jr.: Donald John Trump Jr. (born December 31, 1977) is an American businessman and former reality TV personality. He is the oldest child of the 45th President of the United States, Donald Trump, and his first wife, Ivana.
Document 12: The Seduction of Hillary Rodham: The Seduction of Hillary Rodham is a 1996 book about the early years of Hillary Rodham Clinton written by David Brock.
Document 13: Donald Trump: Donald John Trump (born June 14, 1946) is the 45th and current President of the United States, in office since January 20, 2017. Before entering politics, he was a businessman and television personality.
Document 14: Business career of Donald Trump: Donald Trump is an American businessman, former television personality, and the 45th President of the United States. He began his real estate career at his father's company, Elizabeth Trump and Son, which he later renamed to The Trump Organization. He rose to public prominence after a number of successful real estate deals in Manhattan and New York City, and his company now owns and develops lodging and golf courses around the world. Trump partly or completely owned several beauty pageants between 1996 and 2015. He has marketed his name to many building projects and commercial products. Trump's unsuccessful business ventures have included several casino and hotel bankruptcies, the folding of his New Jersey Generals football team, and the now-defunct Trump University.
Document 15: Donald J. Trump Foundation: The Donald J. Trump Foundation is a New York-based private foundation founded and chaired by President of the United States Donald Trump. It has been a source of controversy, criticism and scrutiny. The foundation has been fined for making political contributions and admitted engaging in self-dealing practices to benefit Trump, his family, and businesses. On December 24, 2016, Trump said he intended to dissolve the foundation; as of 2017 he has not done so.
ground_truth: 45th