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: This 33rd president was the nation's leader during WW2.? 
Knowledge Triplets: World War II, base.morelaw.war.peace_treaty, Franco-Soviet Treaty of Mutual Assistance
World War II, military.military_conflict.commanders, m.0w5t9rt
m.0hnjbwk, common.webpage.topic, President of the United States
President of the United States, common.topic.image, Official portrait of Barack Obama
World War II, military.military_conflict.casualties, m.043wps7
m.09y0608, common.webpage.topic, World War II
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, common.topic.image, command.jpg
World War II, common.topic.webpage, m.09x4cx1
The Price of the Victory, common.topic.subjects, World War II
m.0b48dsf, common.webpage.topic, World War II
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, common.topic.article, m.063t8my
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Joseph Stalin
President of the United States, fictional_universe.character_occupation.characters_with_this_occupation, Josiah Bartlet
m.09w7nt9, common.webpage.topic, World War II
President of the United States, common.topic.webpage, m.09ysj6g
m.05rnk1w, event.speech_or_presentation.speech_topic, World War II
President of the United States, base.schemastaging.context_name.plural, m.0w0qt9b
WW2Montage, common.image.appears_in_topic_gallery, World War II
George W. Bush, people.person.nationality, United States of America
m.09wl5j0, common.webpage.topic, World War II
Allies of World War II, common.topic.image, m.02923_6
Dwight D. Eisenhower, 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
World War II, common.topic.notable_for, g.125500wpl
20th century, time.event.includes_event, World War II
World War II, military.military_conflict.commanders, m.0w5q2sz
Adolf Hitler, people.person.profession, Politician
Allies of World War II, military.military_combatant.casualties, m.02h7nq3
m.09wwq41, common.webpage.topic, President
m.0b475k_, common.webpage.topic, World War II
m.03fx817, government.politician.government_positions_held, Harry S. Truman
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
President, common.topic.webpage, m.09wwq41
Maurice Gamelin, military.military_person.participated_in_conflicts, World War II
m.059b7cc, military.military_command.military_conflict, World War II
Adolf Hitler, people.person.gender, Male
World War II, base.morelaw.war.peace_treaty, Pact of Steel
World War II, common.topic.webpage, m.09y5hqr
m.09y9l5w, common.webpage.topic, World War II
George H. W. Bush, people.person.children, George W. Bush
m.04jx14r, military.military_command.military_commander, Harry S. Truman
World War II, time.event.locations, Southeast Asia
m.0w5q83x, military.military_command.military_conflict, World War II
m.0w5q8n_, military.military_command.military_conflict, World War II
World War II, common.topic.webpage, m.09yj2jt
World War II, common.topic.webpage, m.09xr1l4
m.09ydx3t, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09x773p
World War I, base.culturalevent.event.entity_involved, Woodrow Wilson
World War II, common.topic.webpage, m.0b49czw
President of the United States, common.topic.webpage, m.09xgz2n
World War II, common.topic.webpage, m.0b475k_
World War II, common.topic.subject_of, May 10-1940 Germany Invades Holland!
m.0478pm4, military.military_command.military_conflict, World War II
Winston Churchill, military.military_person.participated_in_conflicts, World War I
m.09xss79, common.webpage.topic, World War II
President of the United States, base.ontologies.ontology_class.equivalent_classes, m.0dj2gvv
World War II, common.topic.webpage, m.09wsxxn
World War II, common.topic.image, WW2Montage
m.02h77t6, military.military_command.military_conflict, World War II
m.09wgp7j, common.webpage.topic, World War II
Nuremberg Charter, base.morelaw.peace_treaty.ends_war, World War II
World War II, event.speech_or_presentation.speech_topic, m.05rpn5h
P-38 can opener, base.argumentmaps.original_idea.discovered_during_event, World War II
m.0w5t225, military.military_command.military_conflict, World War II
Chiang Kai-shek, military.military_person.participated_in_conflicts, World War II
World War II, base.jewlib.jewish_studies_field.collections, National Archives - Digital Holocaust Records
m.09wwp1v, common.webpage.topic, World War II
World War II, military.military_conflict.combatants, m.04g9ywq
John F. Kennedy, military.military_person.participated_in_conflicts, World War II
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Benito Mussolini
m.05rpn5h, event.speech_or_presentation.speaker_s, Harry S. Truman
m.043wps7, military.casualties.military_conflict, World War II
World War II, common.topic.webpage, m.09x7jp_
World War II, common.topic.webpage, m.09yggz2
m.02h7npm, military.casualties.military_conflict, World War II
m.04lmj_d, common.webpage.topic, Living with the Dead: W. Eugene Smith and World War II
World War II, time.event.locations, Europe
George Washington, common.topic.image, George Washington, first President of the United States
World War II, military.military_conflict.commanders, m.0w5s7wq
President of the United States, common.topic.webpage, m.0663zsk
m.0105whjl, organization.leadership.role, President
World War II, common.topic.image, m.02923_6
President of the United States, base.firsts.achievement.firsts, m.04wrwjv
m.09xr1l4, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09ysx61
World War II, common.topic.subject_of, The Price of the Victory
m.02h7npw, military.casualties.combatant, Allies of World War II
m.09xgynp, common.webpage.topic, World War II
President of the United States, common.topic.webpage, m.04lsvx0
World War II, common.topic.webpage, m.09y6kxc
m.0663zsk, common.webpage.topic, President of the United States
President, organization.role.leaders, m.012hw29r
m.0b48g2t, common.webpage.topic, World War II
m.09y8d_t, common.webpage.topic, World War II
Władysław Anders, military.military_person.participated_in_conflicts, World War II
m.09ysx61, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09xxnlt
m.09ynr7x, common.webpage.topic, President of the United States
WW2Montage, common.image.size, m.04246bq
m.09yjnz5, common.webpage.topic, World War II
20th century, common.topic.image, WW1 TitlePicture For Wikipedia Article
Archibald Wavell, 1st Earl Wavell, military.military_person.participated_in_conflicts, World War II
m.0w5sb93, military.military_command.military_conflict, World War II
World War II, common.topic.webpage, m.09w9d_p
Allies of World War II, military.military_combatant.casualties, m.02h7npw
m.09ygxjq, common.webpage.topic, President of the United States
m.09x7jp_, common.webpage.topic, World War II
US President, common.topic.notable_types, Harry S. Truman
m.09yfzdj, common.webpage.topic, World War II
Carl Gustaf Emil Mannerheim, military.military_person.participated_in_conflicts, World War II
Anglo-Soviet Agreement, base.morelaw.peace_treaty.ends_war, World War II
World War II, common.topic.webpage, m.0b46p4g
World War II, base.morelaw.war.peace_treaty, Anglo-Soviet Agreement
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
President of the United States, common.topic.webpage, m.05ckhcc
Allies of World War II, military.military_combatant.includes_allies, United Kingdom
m.09wvy_x, common.webpage.topic, President of the United States
m.04wrwjv, base.firsts.first_achievement.achievement, President of the United States
World War II, common.topic.webpage, m.09ydx3t
Edward Rydz-Śmigły, military.military_person.participated_in_conflicts, World War II
m.0w5s7wq, military.military_command.military_conflict, World War II
m.0b45zcq, common.webpage.topic, World War II
President of the United States, common.topic.webpage, m.09wvy_x
m.09w41xr, common.webpage.topic, World War II
m.09y9g34, common.webpage.topic, President of the United States
m.09w6h41, common.webpage.topic, President of the United States
President of the United States, government.government_office_or_title.jurisdiction, United States of America
Charles de Gaulle, military.military_person.participated_in_conflicts, World War II
President of the United States, business.employer.employees, m.0whvvj4
Ronald Reagan, government.us_president.vice_president, George H. W. Bush
Adolf Hitler, people.person.profession, Soldier
World War II, common.topic.webpage, m.09x5b2d
World War II, common.topic.webpage, m.09xyz9p
Adolf Hitler, people.person.nationality, Germany
World War II, common.topic.webpage, m.09y2gbs
m.02h7npb, military.military_command.military_conflict, World War II
World War II, common.topic.image, World War II montage image
President of the United States, common.topic.webpage, m.0b46f7h
m.09ys_2c, common.webpage.topic, World War II
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, book.book.genre, Non-fiction
President of the United States, common.topic.image, George Washington, first President of the United States
World War II, military.military_conflict.commanders, m.0w5r8rm
World War II montage image, common.image.size, m.02dts2j
World War II, radio.radio_subject.programs_with_this_subject, The Army Hour
President, organization.role.leaders, m.0105whjl
m.09xrmvz, common.webpage.topic, World War II
m.043wpsh, military.casualties.military_conflict, World War II
m.09w7qyh, common.webpage.topic, World War II
m.09ygg0r, common.webpage.topic, World War II
m.09xm31x, common.webpage.topic, President of the United States
m.02h7np1, military.military_command.military_conflict, World War II
World War II, base.nobelprizes.nobel_subject_area.nobel_awards, m.063vhkn
Charles Lee, common.topic.image, George Washington, first President of the United States
m.09x4cx1, common.webpage.topic, World War II
George S. Patton, military.military_person.participated_in_conflicts, World War II
George H. W. Bush, common.topic.notable_types, US President
World War II, common.topic.webpage, m.09wwvtm
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, book.written_work.author, Peter Rodman
World War II, military.military_conflict.commanders, m.04jx14r
Allies of World War II, military.military_combatant.casualties, m.02h7npm
m.09y6kxc, common.webpage.topic, World War II
President of the United States, base.schemastaging.context_name.pronunciation, g.125_lw0zw
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Town Destroyer
m.05rln07, event.speech_or_presentation.speech_topic, World War II
m.09x5b2d, common.webpage.topic, World War II
m.09w9d_p, common.webpage.topic, World War II
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Presidency of George Washington
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rln07
m.09yybjl, common.webpage.topic, World War II
World War II, base.morelaw.war.peace_treaty, Treaty of Peace with Italy, 1947
George Washington, first President of the United States, common.image.size, m.02f0j1t
President of the United States, common.topic.webpage, m.0hnjbwk
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Dwight D. Eisenhower
m.0b46p4g, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09xq5z0
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rmf82
m.02923_6, common.image.appears_in_topic_gallery, World War II
The War Illustrated, book.periodical.subjects, World War II
m.0b49cc7, common.webpage.topic, World War II
President of the United States, freebase.type_profile.equivalent_topic, US President
m.09xwgl8, common.webpage.topic, World War II
m.09wsrnl, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09wxv0j
President of the United States, base.firsts.achievement.firsts, m.04xdfjz
World War II, common.topic.webpage, m.09wsrnl
D-Day: 40 Years Later, radio.radio_program.subjects, World War II
Living with the Dead: W. Eugene Smith and World War II, common.topic.webpage, m.04lmj_d
m.09wsxxn, common.webpage.topic, World War II
Benito Mussolini, military.military_person.participated_in_conflicts, World War I
m.09ysj6g, common.webpage.topic, President of the United States
World War II, common.topic.webpage, m.09yfzdj
World War II, common.topic.webpage, m.09wgp4k
World War II, common.topic.webpage, m.09xss79
Warren G. Harding, government.us_president.vice_president, Calvin Coolidge
m.09y2gbs, common.webpage.topic, World War II
m.0cqm322, common.webpage.topic, World War II
World War II, base.morelaw.war.peace_treaty, Nuremberg Charter
WW2Montage, common.image.appears_in_topic_gallery, Exercise Tiger
m.02h7npw, military.casualties.military_conflict, World War II
World War II, common.topic.webpage, m.0b46rff
Gerald Ford, military.military_person.participated_in_conflicts, World War II
George Washington, first President of the United States, common.image.appears_in_topic_gallery, George Washington
President of the United States, base.firsts.achievement.firsts, m.04wrx4g
m.0b46f7h, common.webpage.topic, President of the United States
World War II, common.topic.webpage, m.09wl5j0
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, common.topic.notable_types, Book
World War I, common.topic.image, WW1 TitlePicture For Wikipedia Article
m.09ybsfr, common.webpage.topic, World War II
Ronald Reagan, military.military_person.participated_in_conflicts, World War II
Allies of World War II, military.military_combatant.includes_allies, United States of America
m.0b49czw, common.webpage.topic, World War II
May 10-1940 Germany Invades Holland!, common.topic.subjects, Netherlands in World War II
m.0w5r8rm, military.military_command.military_conflict, World War II
World War II, common.topic.webpage, m.09xwgl8
President of the United States, common.topic.webpage, m.09xm31x
World War II, base.morelaw.war.peace_treaty, Moscow Declarations
World War II, common.topic.webpage, m.09w7nt9
World War II, radio.radio_subject.programs_with_this_subject, D-Day: 40 Years Later
m.09yggz2, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09wgp7j
m.09w6pyk, common.webpage.topic, President of the United States
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rm8xf
World War II, time.event.locations, Russia
Richard Nixon, military.military_person.participated_in_conflicts, World War II
World War II, military.military_conflict.commanders, m.0w5sb93
World War II, base.morelaw.war.peace_treaty, Paris Peace Treaties, 1947
World War II, base.morelaw.war.peace_treaty, Sino-American Cooperative Organization
m.09x_3c3, common.webpage.topic, World War II
President of the United States, common.topic.article, m.060dd
President of the United States, government.government_office_or_title.office_holders, m.03fx817
World War II, military.military_conflict.commanders, m.0w5qcxy
World War II, base.morelaw.war.peace_treaty, Tehran Declaration
m.09y5hqr, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09y9l5w
President of the United States, common.topic.webpage, m.09ynr7x
World War II, common.topic.webpage, m.0b48g2t
President of the United States, book.book_subject.works, The American Leadership Tradition: Moral Vision from Washington to Clinton
m.09xyz9p, common.webpage.topic, World War II
President, organization.role.leaders, m.010r11r2
World War II, time.event.included_in_event, 20th century
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rpn5h
George H. W. Bush, government.us_vice_president.to_president, Ronald Reagan
World War II, common.topic.webpage, m.09wwp1v
m.05rpn5h, event.speech_or_presentation.speech_topic, World War II
World War II, common.topic.webpage, m.0b49cc7
Adolf Hitler, military.military_commander.military_commands, m.02h7nns
m.063vhkn, base.nobelprizes.nobel_honor.subject_area, World War II
World War II, military.military_conflict.commanders, m.0w5vmcb
Great Patriotic War, time.event.included_in_event, World War II
World War II, common.topic.webpage, m.0cqm322
World War II, military.military_conflict.commanders, m.0w5t225
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
m.05rmf82, event.speech_or_presentation.speech_topic, World War II
m.09wxv0j, common.webpage.topic, World War II
m.09yf8lh, common.webpage.topic, World War II
m.09yvl19, common.webpage.topic, World War II
m.09x773p, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09w41xr
United States of America, military.military_combatant.belongs_to_combatant_group, Allies of World War II
World War II, base.morelaw.war.peace_treaty, Atlantic Charter
Dwight D. Eisenhower, military.military_person.participated_in_conflicts, World War I
m.02h7nrd, military.casualties.military_conflict, World War II
World War II, military.military_conflict.commanders, m.0w5q83x
m.04lsvx0, common.webpage.topic, President of the United States
President of the United States, book.book_subject.works, Presidential Leadership: Rating the Best and the Worst in the White House
1940s, time.event.includes_event, World War II
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.010nmtv6
May 10-1940 Germany Invades Holland!, common.topic.subjects, World War II
United States of America, people.person.nationality, Harry S. Truman
Mediterranean and Middle East theatre of World War II, base.culturalevent.event.entity_involved, Adolf Hitler
President of the United States, book.book_subject.works, The Sound of Leadership: Presidential Communication in the Modern Age
President of the United States, fictional_universe.character_occupation.characters_with_this_occupation, President Thomas Westwood
Adolf Hitler, military.military_person.participated_in_conflicts, World War I
m.02h7nn7, military.military_command.military_conflict, World War II
George Washington, first President of the United States, common.image.appears_in_topic_gallery, The Imperial Presidency
Harry S. Truman, military.military_person.participated_in_conflicts, World War I
World War II, time.event.locations, Asia
President of the United States, base.firsts.achievement.firsts, m.08ntjg4
World War II, common.topic.webpage, m.09w7qyh
m.09yj2jt, common.webpage.topic, World War II
m.09y93hy, common.webpage.topic, President of the United States
m.02h7nnj, military.military_command.military_conflict, World War II
World War II, book.periodical_subject.periodicals, The War Illustrated
World War II, common.topic.webpage, m.09y4ljx
World War II, common.topic.webpage, m.09y0608
World War II, base.jewlib.jewish_studies_field.collections, Captured German Records
Benito Mussolini, military.military_person.participated_in_conflicts, World War II
m.04g9ywq, military.military_combatant_group.conflict, World War II
World War II, common.topic.webpage, m.09yf8lh
World War II montage image, common.image.appears_in_topic_gallery, World War II
m.05rmrf2, event.speech_or_presentation.speech_topic, World War II
m.05rmlhb, event.speech_or_presentation.speech_topic, World War II
World War II, time.event.locations, Africa
m.0w5qcxy, military.military_command.military_conflict, World War II
President of the United States, common.topic.notable_for, g.125734vfj
m.09y4ljx, common.webpage.topic, World War II
m.0b464_j, common.webpage.topic, President of the United States
m.0w5q2sz, military.military_command.military_conflict, World War II
m.02h7npm, military.casualties.combatant, Allies of World War II
World War II, common.topic.webpage, m.09yjnz5
World War II, common.topic.webpage, m.09xgynp
World War II, base.morelaw.war.peace_treaty, Franco-Polish alliance
Tadeusz Bór-Komorowski, military.military_person.participated_in_conflicts, World War II
Lyndon B. Johnson, military.military_person.participated_in_conflicts, World War II
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rnk1w
m.05rm8xf, event.speech_or_presentation.speech_topic, World War II
George W. Bush, common.topic.notable_types, US President
World War II, common.topic.webpage, m.0b45zcq
World War II, common.topic.webpage, m.09ygg0r
President of the United States, common.topic.webpage, m.09ygxjq
World War II, common.topic.webpage, m.09ys_2c
World War II, time.event.locations, Scandinavia
George Washington, first President of the United States, common.image.appears_in_topic_gallery, Charles Lee
m.09xxnlt, common.webpage.topic, World War II
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rmlhb
President of the United States, common.topic.webpage, m.09w6h41
World War II, military.military_conflict.commanders, m.0w5q8n_
World War II montage image, common.image.appears_in_topic_gallery, 1940s
President of the United States, common.topic.webpage, m.09y9g34
Dwight D. Eisenhower, government.us_president.vice_president, Richard Nixon
m.05ckhcc, common.webpage.topic, President of the United States
m.0b6rtrx, common.webpage.topic, World War II
Living with the Dead: W. Eugene Smith and World War II, common.topic.notable_for, g.125fv4np3
World War II, time.event.locations, Eurasia
m.02h7nns, military.military_command.military_conflict, World War II
m.09xlnpm, common.webpage.topic, President of the United States
m.02923_6, common.image.appears_in_topic_gallery, Allies of World War II
m.09xgz2n, common.webpage.topic, President of the United States
Władysław Sikorski, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.0b6rtrx
World War II, event.speech_topic.speeches_or_presentations_on_this_topic, m.05rmrf2
Allies of World War II, military.military_combatant.includes_allies, Soviet Union
President of the United States, common.topic.webpage, m.09xlnpm
m.010_09yn, military.military_command.military_conflict, World War II
m.0b46rff, common.webpage.topic, World War II
Living with the Dead: W. Eugene Smith and World War II, common.topic.article, m.04lmj_t
m.02h7nq3, military.casualties.combatant, Allies of World War II
President of the United States, book.book_subject.works, President Pennybaker
George H. W. Bush, people.person.nationality, United States of America
m.04jx14r, military.military_command.military_conflict, World War II
World War II, military.military_conflict.casualties, m.043wpsh
President of the United States, common.topic.webpage, m.09w6pyk
m.09wwvtm, common.webpage.topic, World War II
George H. W. Bush, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09x_3c3
World War II, time.event.included_in_event, 1940s
World War II, common.topic.webpage, m.09yvl19
George Washington, first President of the United States, common.image.appears_in_topic_gallery, President of the United States
Josip Broz Tito, military.military_person.participated_in_conflicts, World War II
1940s, common.topic.image, World War II montage image
World War II, military.military_conflict.casualties, m.02h7npw
World War II, common.topic.webpage, m.09yybjl
m.09xq5z0, common.webpage.topic, World War II
World War II, common.topic.article, m.081q5
President of the United States, common.topic.webpage, m.09y93hy
World War II, common.topic.webpage, m.0b48dsf
World War II, common.topic.webpage, m.09xrmvz
Atlantic Charter, base.morelaw.peace_treaty.ends_war, World War II
m.09wgp4k, common.webpage.topic, World War II
Presidential Command: Power, Leadership, and the Making of Foreign Policy from Richard Nixon to George W. Bush, common.topic.notable_for, g.125f9cm5z
m.0w5t9rt, military.military_command.military_conflict, World War II
m.010nmtv6, event.speech_or_presentation.speech_topic, World War II
World War II, time.event.locations, Middle East
World War II, common.topic.webpage, m.09y8d_t
m.02h7nmz, military.military_command.military_conflict, World War II
World War II, common.topic.webpage, m.09ybsfr
President of the United States, common.topic.webpage, m.0b464_j
m.012hw29r, organization.leadership.role, President

Answer: Harry S. Truman