user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Who was the US President during WW2 who held his government position until 8-26-1920? 
Knowledge Triplets: World War II, event.speech_or_presentation.speech_topic, m.05rln07
President of the United States, government.government_office_or_title.office_holders, m.03fx899
President of the United States, common.topic.webpage, m.05ckhcc
m.09w6h41, common.webpage.topic, President of the United States
President of the United States, common.topic.image, George Washington, first President of the United States
m.03fx7zy, government.government_position_held.office_position_or_title, President of the United States
Franklin D. Roosevelt, people.person.profession, Soldier
m.03fx88m, government.government_position_held.office_position_or_title, President of the United States
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, book.written_work.subjects, President of the United States
Andrew Johnson, government.us_vice_president.to_president, Abraham Lincoln
Zachary Taylor, common.topic.notable_types, US President
Ulysses S. Grant, common.topic.notable_types, US President
m.03fx83k, government.government_position_held.office_position_or_title, President of the United States
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Presidency of George Washington
m.04469y8, government.government_position_held.office_holder, James K. Polk
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Dwight D. Eisenhower
World War II, common.topic.webpage, m.0b49czw
Woodrow Wilson, people.person.nationality, United States of America
President Pennybaker, book.written_work.subjects, President of the United States
m.03fx85y, government.government_position_held.office_holder, William McKinley
m.0b49czw, common.webpage.topic, World War II
Franklin D. Roosevelt, people.person.profession, Politician
m.03fx838, government.government_position_held.office_holder, Woodrow Wilson
m.09w7nt9, common.webpage.topic, World War II
m.04469y1, government.government_position_held.office_holder, James Buchanan
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Benito Mussolini
President of the United States, common.topic.webpage, m.09xlnpm
Dwight D. Eisenhower, government.us_president.vice_president, Richard Nixon
Martin Van Buren, government.us_vice_president.to_president, Andrew Jackson
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, book.written_work.author, Peter Rodman
President of the United States, government.government_office_or_title.office_holders, m.03fx7j8
President of the United States, government.government_office_or_title.office_holders, m.04469y1
Gerald Ford, government.politician.government_positions_held, m.03fx7zy
Herbert Hoover, common.topic.notable_types, US President
Lyndon B. Johnson, government.us_vice_president.to_president, John F. Kennedy
WW2Montage, common.image.appears_in_topic_gallery, World War II
m.04466xz, government.government_position_held.office_position_or_title, President of the United States
President of the United States, common.topic.webpage, m.09ygxjq
William Howard Taft, people.person.nationality, United States of America
President Thomas Westwood, fictional_universe.fictional_character.occupation, President of the United States
m.03fx817, government.government_position_held.office_holder, Harry S. Truman
Woodrow Wilson, people.person.profession, Historian
Harry S. Truman, common.topic.notable_types, US President
m.0446b9j, government.government_position_held.basic_title, President
m.0446b8l, government.government_position_held.basic_title, President
Woodrow Wilson, common.topic.notable_types, US President
William McKinley, government.us_president.vice_president, Theodore Roosevelt
Maurice Gamelin, military.military_person.participated_in_conflicts, World War II
John F. Kennedy, government.us_president.vice_president, Lyndon B. Johnson
John Tyler, government.us_vice_president.to_president, William Henry Harrison
Thomas Jefferson, government.us_vice_president.to_president, John Adams
World War II, common.topic.webpage, m.0b48g2t
Władysław Sikorski, military.military_person.participated_in_conflicts, World War II
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Powers of the President of the United States
m.04469xv, government.government_position_held.office_holder, John Tyler
John Quincy Adams, government.politician.government_positions_held, m.040b_7k
m.02kzpyv, government.government_position_held.office_holder, Ronald Reagan
William Henry Harrison, government.us_president.vice_president, John Tyler
President of the United States, common.topic.webpage, m.09xgz2n
President of the United States, base.schemastaging.context_name.pronunciation, g.125_lw0zw
George H. W. Bush, government.politician.government_positions_held, m.01xrx8q
Dwight D. Eisenhower, military.military_person.participated_in_conflicts, World War II
m.03fx817, government.government_position_held.office_position_or_title, President of the United States
m.04469xf, government.government_position_held.office_holder, Martin Van Buren
James Monroe, common.topic.notable_types, US President
Calvin Coolidge, common.topic.notable_types, US President
Richard Nixon, military.military_person.participated_in_conflicts, World War II
m.04466tx, government.government_position_held.basic_title, President
m.02h6phn, government.government_position_held.office_holder, George W. Bush
Lyndon B. Johnson, common.topic.notable_types, US President
President of the United States, government.government_office_or_title.office_holders, m.03fx87q
m.03fx8cf, government.government_position_held.office_holder, Richard Nixon
Harry S. Truman, government.us_vice_president.to_president, Franklin D. Roosevelt
James Madison, common.topic.notable_types, US President
President of the United States, government.government_office_or_title.office_holders, m.03fx817
Calvin Coolidge, government.us_vice_president.to_president, Warren G. Harding
George H. W. Bush, military.military_person.participated_in_conflicts, World War II
Gerald Ford, military.military_person.participated_in_conflicts, World War II
Lyndon B. Johnson, military.military_person.participated_in_conflicts, World War II
President of the United States, government.government_office_or_title.office_holders, m.02hz5r6
m.03fx82m, government.government_position_held.office_position_or_title, President of the United States
Jimmy Carter, common.topic.notable_types, US President
Abraham Lincoln, government.politician.government_positions_held, m.0446bdb
m.04s_2dh, government.government_position_held.office_holder, Barack Obama
President of the United States, government.government_office_or_title.office_holders, m.04466xb
m.03fx82m, government.government_position_held.basic_title, President
President of the United States, government.government_office_or_title.office_holders, m.04466tx
President of the United States, government.government_office_or_title.office_holders, m.03q2h_9
m.0446b70, government.government_position_held.office_position_or_title, President of the United States
Franklin Pierce, common.topic.notable_types, US President
m.0446b9r, government.government_position_held.office_position_or_title, President of the United States
m.04466zr, government.government_position_held.office_position_or_title, President of the United States
World War II, common.topic.webpage, m.09w7nt9
President of the United States, government.government_office_or_title.office_holders, m.0446bdb
m.03fx8bt, government.government_position_held.office_holder, Thomas Jefferson
m.03q2h_9, government.government_position_held.office_holder, Franklin D. Roosevelt
President of the United States, common.topic.webpage, m.09wvy_x
Richard Nixon, government.us_president.vice_president, Gerald Ford
George Washington, common.topic.image, George Washington, first President of the United States
President of the United States, government.government_office_or_title.office_holders, m.02h6phn
President of the United States, common.topic.webpage, m.09w6pyk
President of the United States, common.topic.webpage, m.09xm31x
m.04466xz, government.government_position_held.office_holder, James Monroe
Grover Cleveland, government.politician.government_positions_held, m.03fx7hy
James Monroe, government.politician.government_positions_held, m.04466xz
Richard Nixon, common.topic.notable_types, US President
m.04466xm, government.government_position_held.office_position_or_title, President of the United States
m.03q2h_9, government.government_position_held.office_position_or_title, President of the United States
m.03fx8c3, government.government_position_held.office_position_or_title, President of the United States
m.03fx8bt, government.government_position_held.office_position_or_title, President of the United States
Harry S. Truman, military.military_person.participated_in_conflicts, World War I
Herbert Hoover, government.politician.government_positions_held, m.0446b9j
James A. Garfield, government.us_president.vice_president, Chester A. Arthur
President of the United States, government.government_office_or_title.office_holders, m.03fx88m
Andrew Johnson, government.politician.government_positions_held, m.04466tx
George H. W. Bush, government.us_vice_president.to_president, Ronald Reagan
World War II, common.topic.webpage, m.09w41xr
m.03fx899, government.government_position_held.office_holder, Theodore Roosevelt
Theodore Roosevelt, people.person.nationality, United States of America
Charles Lee, common.topic.image, George Washington, first President of the United States
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Adolf Hitler
m.03fx83v, government.government_position_held.office_position_or_title, President of the United States
Zachary Taylor, government.us_president.vice_president, Millard Fillmore
Franklin D. Roosevelt, government.politician.government_positions_held, m.03q2h_9
m.03q2h_9, government.government_position_held.basic_title, President
George W. Bush, common.topic.notable_types, US President
President of the United States, government.government_office_or_title.office_holders, m.04469xv
Franklin D. Roosevelt, common.topic.notable_types, US President
Franklin D. Roosevelt, people.person.nationality, United States of America
m.03fx8bt, government.government_position_held.basic_title, President
President of the United States, government.government_office_or_title.office_holders, m.03q2h_9
WW2Montage, common.image.size, m.04246bq
Rutherford B. Hayes, common.topic.notable_types, US President
President of the United States, book.book_subject.works, Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush
Lyndon B. Johnson, government.politician.government_positions_held, m.03fx81_
m.02s9flj, government.government_position_held.office_position_or_title, President of the United States
James A. Garfield, common.topic.notable_types, US President
m.0446b8l, government.government_position_held.office_position_or_title, President of the United States
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Charles Lee
President of the United States, common.topic.webpage, m.09ysj6g
Warren G. Harding, government.politician.government_positions_held, m.03fx88b
George Washington, first President of the United States, common.image.appears_in_topic_gallery, President of the United States
US President, common.topic.notable_types, Franklin D. Roosevelt
Martin Van Buren, common.topic.notable_types, US President
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Town Destroyer
Franklin D. Roosevelt, government.us_president.vice_president, Harry S. Truman
World War II, common.topic.webpage, m.09w9d_p
William Henry Harrison, government.politician.government_positions_held, m.03fx87q
Jimmy Carter, government.politician.government_positions_held, m.0446b70
m.0446b9r, government.government_position_held.office_holder, Calvin Coolidge
m.04469y8, government.government_position_held.basic_title, President
Andrew Johnson, common.topic.notable_types, US President
m.02h6phn, government.government_position_held.office_position_or_title, President of the United States
President of the United States, government.government_office_or_title.office_holders, m.04469yh
Herbert Hoover, people.person.nationality, United States of America
President of the United States, government.government_office_or_title.category, President
m.04469y1, government.government_position_held.office_position_or_title, President of the United States
m.03fx7_v, government.government_position_held.office_holder, Benjamin Harrison
President of the United States, common.topic.notable_for, g.125734vfj
President of the United States, government.government_office_or_title.office_holders, m.03fx7hy
m.04469yh, government.government_position_held.office_position_or_title, President of the United States
m.03fx7j8, government.government_position_held.office_holder, Grover Cleveland
James Buchanan, government.politician.government_positions_held, m.04469y1
m.02s9flj, government.government_position_held.office_holder, George Washington
President of the United States, common.topic.article, m.060dd
President of the United States, government.government_office_or_title.office_holders, m.04469xf
George Washington, government.us_president.vice_president, John Adams
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, book.written_work.subjects, Politics of the United States
m.0446bdb, government.government_position_held.basic_title, President
m.03fx85y, government.government_position_held.office_position_or_title, President of the United States
President of the United States, government.government_office_or_title.office_holders, m.03fx7_v
President of the United States, government.government_office_or_title.office_holders, m.0446b70
President of the United States, government.government_office_or_title.office_holders, m.04469y8
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, common.topic.article, m.063t8my
Benjamin Harrison, common.topic.notable_types, US President
m.03fx817, government.government_position_held.basic_title, President
George H. W. Bush, people.person.nationality, United States of America
Thomas Jefferson, government.politician.government_positions_held, m.03fx8bt
John Adams, government.us_president.vice_president, Thomas Jefferson
m.02k6vpl, government.government_position_held.office_holder, Bill Clinton
m.04s_2dh, government.government_position_held.office_position_or_title, President of the United States
m.01xrx8q, government.government_position_held.office_position_or_title, President of the United States
Woodrow Wilson, government.politician.government_positions_held, m.03fx838
m.0446bdb, government.government_position_held.office_position_or_title, President of the United States
John Quincy Adams, common.topic.notable_types, US President
m.03fx7_v, government.government_position_held.office_position_or_title, President of the United States
m.03fx838, government.government_position_held.office_position_or_title, President of the United States
Harry S. Truman, government.politician.government_positions_held, m.03fx817
World War II, common.topic.webpage, m.0b49cc7
President of the United States, common.topic.webpage, m.0663zsk
John F. Kennedy, government.politician.government_positions_held, m.02hz5r6
m.0446bdk, government.government_position_held.office_holder, Franklin Pierce
President of the United States, government.government_office_or_title.office_holders, m.03fx7zy
George Washington, common.topic.notable_types, US President
m.02s9flj, government.government_position_held.basic_title, President
Richard Nixon, government.politician.government_positions_held, m.03fx8cf
World War II, common.topic.webpage, m.09wxv0j
William McKinley, government.politician.government_positions_held, m.03fx85y
President of the United States, common.topic.webpage, m.0hnjbwk
President of the United States, common.topic.webpage, m.0b464_j
George H. W. Bush, common.topic.notable_types, US President
Abraham Lincoln, government.us_president.vice_president, Andrew Johnson
World War II, common.topic.image, WW2Montage
m.03fx88b, government.government_position_held.office_holder, Warren G. Harding
Benjamin Harrison, government.politician.government_positions_held, m.03fx7_v
Theodore Roosevelt, common.topic.notable_types, US President
m.04466xb, government.government_position_held.office_position_or_title, President of the United States
m.04466xm, government.government_position_held.office_holder, James Madison
President of the United States, government.government_office_or_title.office_holders, m.03fx85y
President of the United States, government.government_office_or_title.office_holders, m.02kzpyv
m.03fx87q, government.government_position_held.office_holder, William Henry Harrison
m.03fx8c3, government.government_position_held.office_holder, Rutherford B. Hayes
George W. Bush, government.politician.government_positions_held, m.02h6phn
m.04466zr, government.government_position_held.office_holder, Andrew Jackson
John F. Kennedy, common.topic.notable_types, US President
President of the United States, government.government_office_or_title.office_holders, m.0446bdk
George Washington, first President of the United States, common.image.appears_in_topic_gallery, The Imperial Presidency
Grover Cleveland, government.politician.government_positions_held, m.03fx7j8
Millard Fillmore, government.us_vice_president.to_president, Zachary Taylor
m.0446bdk, government.government_position_held.basic_title, President
Andrew Jackson, common.topic.notable_types, US President
m.03fx899, government.government_position_held.office_position_or_title, President of the United States
President of the United States, common.topic.webpage, m.09ynr7x
Charles de Gaulle, military.military_person.participated_in_conflicts, World War II
m.03fx7hy, government.government_position_held.office_holder, Grover Cleveland
President of the United States, government.government_office_or_title.office_holders, m.03fx83k
President of the United States, government.government_office_or_title.office_holders, m.04466zr
President of the United States, government.government_office_or_title.office_holders, m.03fx8cf
World War II, common.topic.webpage, m.09y9l5w
William McKinley, common.topic.notable_types, US President
President of the United States, government.government_office_or_title.office_holders, m.02k6vpl
Edward Rydz-Śmigły, military.military_person.participated_in_conflicts, World War II
William Howard Taft, common.topic.notable_types, US President
Dwight D. Eisenhower, military.military_person.participated_in_conflicts, World War I
President of the United States, government.government_office_or_title.office_holders, m.03fx8bt
m.03fx81_, government.government_position_held.office_holder, Lyndon B. Johnson
President of the United States, government.government_office_or_title.office_holders, m.0446b8l
President of the United States, government.government_office_or_title.office_holders, m.0446b9r
m.03fx83k, government.government_position_held.office_holder, William Howard Taft
Ronald Reagan, common.topic.notable_types, US President
m.09w41xr, common.webpage.topic, World War II
Theodore Roosevelt, people.person.profession, Historian
President of the United States, government.government_office_or_title.office_holders, m.03fx83v
President of the United States, common.topic.webpage, m.0b46f7h
President of the United States, government.government_office_or_title.office_holders, m.04466xz
Grover Cleveland, common.topic.notable_types, US President
m.03fx83v, government.government_position_held.office_holder, Zachary Taylor
m.03fx7zy, government.government_position_held.office_holder, Gerald Ford
Calvin Coolidge, government.politician.government_positions_held, m.0446b9r
m.05rln07, event.speech_or_presentation.speaker_s, Franklin D. Roosevelt
Ronald Reagan, government.politician.government_positions_held, m.02kzpyv
John Adams, government.us_vice_president.to_president, George Washington
President of the United States, government.government_office_or_title.office_holders, m.03fx8c3
World War II, common.topic.webpage, m.09wwvtm
m.03fx82m, government.government_position_held.office_holder, James A. Garfield
m.0446bdb, government.government_position_held.office_holder, Abraham Lincoln
President of the United States, government.government_office_or_title.office_holders, m.02s9flj
Gerald Ford, government.us_vice_president.to_president, Richard Nixon
Abraham Lincoln, common.topic.notable_types, US President
m.0446b70, government.government_position_held.basic_title, President
m.040b_7k, government.government_position_held.office_holder, John Quincy Adams
William Howard Taft, government.politician.government_positions_held, m.03fx83k
m.04469yh, government.government_position_held.basic_title, President
m.04466xb, government.government_position_held.office_holder, John Adams
World War II, common.topic.webpage, m.09yggz2
m.03fx81_, government.government_position_held.office_position_or_title, President of the United States
Chester A. Arthur, government.us_vice_president.to_president, James A. Garfield
United States of America, people.person.nationality, Franklin D. Roosevelt
Carl Gustaf Emil Mannerheim, military.military_person.participated_in_conflicts, World War II
m.04469xf, government.government_position_held.office_position_or_title, President of the United States
m.0446bcc, government.government_position_held.office_position_or_title, President of the United States
Richard Nixon, government.us_vice_president.to_president, Dwight D. Eisenhower
President of the United States, common.topic.webpage, m.09w6h41
President of the United States, government.government_office_or_title.office_holders, m.03fx82m
m.03fx88m, government.government_position_held.office_holder, Ulysses S. Grant
President of the United States, government.government_office_or_title.office_holders, m.03fx838
Władysław Anders, military.military_person.participated_in_conflicts, World War II
William Henry Harrison, common.topic.notable_types, US President
m.040b_7k, government.government_position_held.office_position_or_title, President of the United States
Andrew Jackson, government.us_president.vice_president, Martin Van Buren
World War II, common.topic.webpage, m.09wwp1v
Warren G. Harding, government.us_president.vice_president, Calvin Coolidge
President of the United States, government.government_office_or_title.office_holders, m.04466xm
President of the United States, book.book_subject.works, President Pennybaker
m.03fx7hy, government.government_position_held.office_position_or_title, President of the United States
President of the United States, common.topic.webpage, m.09y9g34
President of the United States, common.topic.webpage, m.04lsvx0
Bill Clinton, government.politician.government_positions_held, m.02k6vpl
m.02kzpyv, government.government_position_held.office_position_or_title, President of the United States
President of the United States, government.government_office_or_title.jurisdiction, United States of America
Thomas Jefferson, common.topic.notable_types, US President
President of the United States, fictional_universe.character_occupation.characters_with_this_occupation, President Thomas Westwood
m.03fx8cf, government.government_position_held.office_position_or_title, President of the United States
Dwight D. Eisenhower, common.topic.notable_types, US President
m.02k6vpl, government.government_position_held.office_position_or_title, President of the United States
Dwight D. Eisenhower, government.politician.government_positions_held, m.0446b8l
James Buchanan, common.topic.notable_types, US President
World War I, base.culturalevent.event.entity_involved, Woodrow Wilson
m.0446bdk, government.government_position_held.office_position_or_title, President of the United States
m.02hz5r6, government.government_position_held.office_position_or_title, President of the United States
m.04s_2dh, government.government_position_held.basic_title, President
President of the United States, government.government_office_or_title.office_holders, m.01xrx8q
m.03q2h_9, government.government_position_held.office_holder, Franklin D. Roosevelt
m.0446b9j, government.government_position_held.office_position_or_title, President of the United States
m.03fx87q, government.government_position_held.office_position_or_title, President of the United States
m.04469y8, government.government_position_held.office_position_or_title, President of the United States
Benito Mussolini, military.military_person.participated_in_conflicts, World War II
m.03fx838, government.government_position_held.basic_title, President
Theodore Roosevelt, government.politician.government_positions_held, m.03fx899
m.04466tx, government.government_position_held.office_position_or_title, President of the United States
James K. Polk, common.topic.notable_types, US President
President of the United States, freebase.type_profile.equivalent_topic, US President
President of the United States, common.topic.webpage, m.09y93hy
m.0446b9j, government.government_position_held.office_holder, Herbert Hoover
Ronald Reagan, military.military_person.participated_in_conflicts, World War II
Bill Clinton, common.topic.notable_types, US President
Warren G. Harding, common.topic.notable_types, US President
Gerald Ford, common.topic.notable_types, US President
Andrew Jackson, government.politician.government_positions_held, m.04466zr
President of the United States, government.government_office_or_title.office_holders, m.03fx88b
m.03fx88b, government.government_position_held.office_position_or_title, President of the United States
John Adams, common.topic.notable_types, US President
John F. Kennedy, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09w7qyh
m.04469xv, government.government_position_held.office_position_or_title, President of the United States
Theodore Roosevelt, government.us_vice_president.to_president, William McKinley
George S. Patton, military.military_person.participated_in_conflicts, World War II
m.04469y1, government.government_position_held.basic_title, President
World War II, common.topic.webpage, m.09wsxxn
George Washington, first President of the United States, common.image.appears_in_topic_gallery, George Washington
President of the United States, government.government_office_or_title.office_holders, m.0446b9j
James Madison, government.politician.government_positions_held, m.04466xm
George Washington, first President of the United States, common.image.size, m.02f0j1t
US President, type.type.domain, Government
President of the United States, government.government_office_or_title.office_holders, m.0446bcc
World War II, common.topic.webpage, m.09y2gbs
m.0446b70, government.government_position_held.office_holder, Jimmy Carter
President of the United States, government.government_office_or_title.office_holders, m.03fx81_
m.01xrx8q, government.government_position_held.office_holder, George H. W. Bush
m.03fx7j8, government.government_position_held.office_position_or_title, President of the United States
m.04466tx, government.government_position_held.office_holder, Andrew Johnson
Ulysses S. Grant, government.politician.government_positions_held, m.03fx88m
John Tyler, common.topic.notable_types, US President
John Adams, government.politician.government_positions_held, m.04466xb
World War II, common.topic.webpage, m.09yj2jt
m.0446b9r, government.government_position_held.basic_title, President
Ronald Reagan, government.us_president.vice_president, George H. W. Bush
George Washington, government.politician.government_positions_held, m.02s9flj
President of the United States, government.government_office_or_title.office_holders, m.04s_2dh
President of the United States, government.government_office_or_title.office_holders, m.040b_7k
m.02hz5r6, government.government_position_held.office_holder, John F. Kennedy
m.0446b8l, government.government_position_held.office_holder, Dwight D. Eisenhower

Answer: Franklin D. Roosevelt