Question: What Columbian President attended the university where the director of Beeswax was educated?

full_context: Document 1: Beeswax (film): Beeswax is a 2009 American mumblecore film written and directed by Andrew Bujalski. The film examines a few days in the life of twins, played by real-life sisters Tilly and Maggie Hatcher.
Document 2: Ken Kristensen: Ken Kristensen received an MFA from Columbia University Film School. While still in film school he was selected to both the Sundance and IFP labs, and worked as an associate producer under Gary Winick ("Charlotte's Web") and Mark Waters ("Mean Girls").
Document 3: Caribbean and Central America Action: Among the public figures speaking at the 33rd conference, held in 2009 in Miami, were the Prime Minister of Haiti, Jean-Max Bellerive, Canada's Minister of State of Foreign Affairs, Peter Kent and Puerto Rico's Secretary of State, Kenneth McClintock. The organization's policy-oriented programs have focused on tourism, financial services, policy and regulatory environments for business in the Americas, energy security, maritime port security, disaster mitigation, customs, telecommunications, intellectual property rights, information technology, agriculture and telecommunications. Cabinet-level officials have represented the United States at prior conferences.
Document 4: Ethan Vogt: Ethan studied photography and filmmaking as an undergraduate at Harvard where he met the writer/director Andrew Bujalski in an introductory film class. Ethan would later producing Bujalski's feature films, Funny Ha Ha (2003), Mutual Appreciation (2005) and Beeswax (2009) which were distributed internationally to critical acclaim. Funny Ha Ha is considered the first "Mumblecore" film and was recognized as one of the 10 most culturally, commercially or technologically important, consequential or groundbreaking films of 2000-9" by A.O. Scott, a chief film critic in the New York Times.
Document 5: University of Chicago: Notable alumni in the field of government and politics include the founder of modern community organizing Saul Alinsky, Obama campaign advisor and top political advisor to President Bill Clinton David Axelrod, Attorney General and federal judge Robert Bork, Attorney General Ramsey Clark, Prohibition agent Eliot Ness, Supreme Court Justice John Paul Stevens, Prime Minister of Canada William Lyon Mackenzie King, 11th Prime Minister of Poland Marek Belka, Governor of the Bank of Japan Masaaki Shirakawa, the first female African-American Senator Carol Moseley Braun, United States Senator from Vermont and 2016 Democratic Presidential Candidate Bernie Sanders, and former World Bank President Paul Wolfowitz.
Document 6: Beeswax: Beeswax (cera alba) is a natural wax produced by honey bees of the genus Apis.  The wax is formed into scales by eight wax-producing glands in the abdominal segments of worker bees, which discard it in or at the hive.  The hive workers collect and use it to form cells for honey storage and larval and pupal protection within the beehive.  Chemically, beeswax consists mainly of esters of fatty acids and various long-chain alcohols.
Document 7: New York Underground Film Festival: Founded in 1994 by filmmakers Todd Phillips ("Road Trip", "Old School") and Andrew Gurland, the New York Underground Film Festival was an annual event that occurred each March at Anthology Film Archives in New York City from 1994 through 2008. After Phillips and Gurland turned the festival over to programmer Ed Halter (now an author and occasional critic for the "Village Voice"), it became noted for documentary and experimental film programming, and occasionally courted controversy, particularly in its early years.
Document 8: The 1 Second Film: "The 1 Second Film" began as a student project by Nirvan Mullick in 2001 while at California Institute of the Arts. The director set out to create a collaborative art project that would bring his school together, and later expanded the project after the success of the initial event. Seed funds for the animation painting event came from a US$1,500 CalArts Grant, an additional US$3,000 was raised by selling producer credits for donations of US$1 or more. In 2004, after graduating and finishing two other animated short films, the director began fundraising to expand The 1 Second Film project by selling US$1 producer credits on the streets of Los Angeles. After raising enough to buy a video camera, the director began to document the fundraising process to include as part of a documentary about the project. In 2005, after getting several celebrities to donate, the director launched a petition drive along with the help of Stephen Colbert to get the credits of "The 1 Second Film" listed on the Internet Movie Database. In March 2005, IMDb began listing the credits.
Document 9: Funny Ha Ha: Funny Ha Ha is a 2002 American film written and directed by Andrew Bujalski. It has been described as the first mumblecore film. The film was shot on 16 mm film on a very low budget. It deals with the lives of people in their twenties as they try to come to terms with life after college and confront the responsibilities of adulthood, if only to put them off for as long as possible.
Document 10: Historical rankings of presidents of the United States: According to a Rasmussen poll conducted in 2007, six presidents -- George Washington, Abraham Lincoln, Thomas Jefferson, Theodore Roosevelt, Franklin D. Roosevelt, and John F. Kennedy -- were rated favorably by at least 80% of Americans.
Document 11: Andrew Sugerman: Andrew Sugerman is an American film producer. He attended the University of Rochester and subsequently the NYU – Tisch School of the Arts. Andrew began his career in television commercials and educational films in New York, then moved to Los Angeles, where he now resides, to work in theatrical feature films.
Document 12: Vanishing of the Bees: Vanishing of the Bees is a 2009 documentary film by Hive Mentality Films & Hipfuel Films, directed by George Langworthy and Maryam Henein and released in the United Kingdom in October 2009. The story is centered on the sudden disappearance of honey bees from beehives around the world, caused by the poorly understood phenomenon known as Colony Collapse Disorder or CCD. Although the film does not draw any firm scientific conclusions as to the precise cause or causes of CCD, it does suggest a link between neonicotinoid pesticides and CCD.
Document 13: Harvard University: Politics: U.N. Secretary General Ban Ki-moon; American political leaders John Hancock, John Adams, John Quincy Adams, Rutherford B. Hayes, Theodore Roosevelt, Franklin D. Roosevelt, John F. Kennedy, Al Gore, George W. Bush and Barack Obama; Chilean President Sebastián Piñera; Colombian President Juan Manuel Santos; Costa Rican President José María Figueres; Mexican Presidents Felipe Calderón, Carlos Salinas de Gortari and Miguel de la Madrid; Mongolian President Tsakhiagiin Elbegdorj; Peruvian President Alejandro Toledo; Taiwanese President Ma Ying-jeou; Canadian Governor General David Lloyd Johnston; Indian Member of Parliament Jayant Sinha; Albanian Prime Minister Fan S. Noli; Canadian Prime Ministers Mackenzie King and Pierre Trudeau; Greek Prime Minister Antonis Samaras; Israeli Prime Minister Benjamin Netanyahu; former Pakistani Prime Minister Benazir Bhutto; U. S. Secretary of Housing and Urban Development Shaun Donovan; Canadian political leader Michael Ignatieff; Pakistani Members of Provincial Assembly Murtaza Bhutto and Sanam Bhutto; Bangladesh Minister of Finance Abul Maal Abdul Muhith; President of Puntland Abdiweli Mohamed Ali; U.S. Ambassador to the European Union Anthony Luzzatto Gardner.
Document 14: Bee Movie: Bee Movie is a 2007 American computer animated comedy film produced by DreamWorks Animation and distributed by Paramount Pictures. Directed by Simon J. Smith and Steve Hickner, the film stars Jerry Seinfeld and Renée Zellweger, with Matthew Broderick, Patrick Warburton, John Goodman and Chris Rock in supporting roles. Its story follows Barry B. Benson (Seinfeld), a honey bee who sues the human race for exploiting bees, after learning from his florist friend Vanessa (Zellweger) that humans sell and consume honey.
Document 15: Harvard University: Other: Civil rights leader W. E. B. Du Bois; philosopher Henry David Thoreau; authors Ralph Waldo Emerson and William S. Burroughs; educators Werner Baer, Harlan Hanson; poets Wallace Stevens, T. S. Eliot and E. E. Cummings; conductor Leonard Bernstein; cellist Yo Yo Ma; pianist and composer Charlie Albright; composer John Alden Carpenter; comedian, television show host and writer Conan O'Brien; actors Tatyana Ali, Nestor Carbonell, Matt Damon, Fred Gwynne, Hill Harper, Rashida Jones, Tommy Lee Jones, Ashley Judd, Jack Lemmon, Natalie Portman, Mira Sorvino, Elisabeth Shue, and Scottie Thompson; film directors Darren Aronofsky, Terrence Malick, Mira Nair, and Whit Stillman; architect Philip Johnson; musicians Rivers Cuomo, Tom Morello, and Gram Parsons; musician, producer and composer Ryan Leslie; serial killer Ted Kaczynski; programmer and activist Richard Stallman; NFL quarterback Ryan Fitzpatrick; NFL center Matt Birk; NBA player Jeremy Lin; US Ski Team skier Ryan Max Riley; physician Sachin H. Jain; physicist J. Robert Oppenheimer; computer pioneer and inventor An Wang; Tibetologist George de Roerich; and Marshall Admiral Isoroku Yamamoto.
ground_truth: Juan Manuel Santos
sub_queries: Beeswax >> director Answer: Andrew Bujalski
Andrew Bujalski >> educated at Answer: Harvard
What Columbia President went to Harvard ? Answer: Juan Manuel Santos