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: Which WWII leader held a position in the US Department of the Navy? 
Knowledge Triplets: World War II, military.military_conflict.commanders, m.02h77t6
Chiang Kai-shek, military.military_person.participated_in_conflicts, World War II
m.0w5t225, military.military_command.military_conflict, World War II
m.04469y1, government.government_position_held.office_holder, James Buchanan
m.09y8d_t, common.webpage.topic, World War II
m.0w5q83x, military.military_command.military_conflict, World War II
World War II, military.military_conflict.commanders, m.0w5q2sz
United States Secretary of the Navy, common.topic.image, Naval Department Seal
m.0w5q8n_, military.military_command.military_conflict, World War II
m.03q2h_j, government.government_position_held.governmental_body, United States Department of the Navy
m.0w5qcxy, military.military_command.military_conflict, World War II
World War II, military.military_conflict.commanders, m.0w5t225
World War II, common.topic.webpage, m.09w41xr
m.0446b8l, government.government_position_held.office_holder, Dwight D. Eisenhower
m.03q2j0v, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy
m.0b6b7w5, government.government_position_held.office_position_or_title, United States Secretary of Defense
George S. Patton, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09w7nt9
m.09y5hqr, common.webpage.topic, World War II
World War II, common.topic.article, m.081q5
m.0b6b7xf, government.government_position_held.governmental_body, United States Department of Defense
Allies of World War II, military.military_combatant.includes_allies, United Kingdom
m.09s664p, government.government_position_held.office_position_or_title, United States Secretary of the Navy
m.0b6b7yk, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.03fx838, government.government_position_held.office_position_or_title, President of the United States
World War II, common.topic.webpage, m.0b48g2t
m.04469xv, government.government_position_held.office_holder, John Tyler
m.0b6b7xf, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0b6b7y5, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.03q2hyl, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy
World War II, common.topic.webpage, m.09y2gbs
m.03fx87q, government.government_position_held.office_position_or_title, President of the United States
m.09w3mzl, government.government_position_held.office_position_or_title, United States Secretary of the Navy
m.07kmj76, people.appointment.appointed_role, United States Secretary of the Navy
United States Department of the Navy, government.governmental_body.offices_positions, United States Secretary of the Navy
World War II, military.military_conflict.commanders, m.0w5q8n_
Harry S. Truman, military.military_person.participated_in_conflicts, World War I
World War I, base.culturalevent.event.entity_involved, Woodrow Wilson
m.02h7npb, military.military_command.military_conflict, World War II
United States Secretary of the Navy, base.schemastaging.context_name.pronunciation, g.125_rtq40
World War II, common.topic.webpage, m.09xq5z0
m.0w5sb93, military.military_command.military_conflict, World War II
Władysław Anders, military.military_person.participated_in_conflicts, World War II
Tadeusz Bór-Komorowski, military.military_person.participated_in_conflicts, World War II
m.09w7qyh, common.webpage.topic, World War II
m.03q2j0v, government.government_position_held.office_holder, Theodore Roosevelt, Jr.
m.011qhxxc, government.government_position_held.governmental_body, United States Department of the Navy
m.0b6b7xt, government.government_position_held.governmental_body, United States Department of Defense
Richard Nixon, military.military_person.participated_in_conflicts, World War II
United States Department of the Navy, common.topic.notable_types, Government Agency
United States Department of the Navy, government.governmental_body.body_this_is_a_component_of, United States Department of Defense
United States Department of the Navy, government.governmental_body.members, m.03q2j0v
m.0b6b7wy, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.03q2j0v, government.government_position_held.governmental_body, United States Department of the Navy
m.03q2h_j, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy
m.03q2hyl, government.government_position_held.office_holder, Theodore Roosevelt
m.03fx87q, government.government_position_held.office_holder, William Henry Harrison
United States Department of the Navy, government.government_agency.jurisdiction, United States of America
m.0b6b7x1, government.government_position_held.governmental_body, United States Department of Defense
United States Department of the Navy, spaceflight.space_program_sponsor.space_programs_sponsored, Project Vanguard
m.0b6b7w1, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0b6b7xy, government.government_position_held.governmental_body, United States Department of Defense
United States Secretary of the Navy, common.topic.image, SecretaryOfTheNavyFlag
Dwight D. Eisenhower, military.military_commander.military_commands, m.04h_hmh
m.03fx81_, government.government_position_held.office_position_or_title, President of the United States
m.0b6b7wp, government.government_position_held.governmental_body, United States Department of Defense
m.03q2hyl, government.government_position_held.governmental_body, United States Department of the Navy
World War II, common.topic.image, m.02923_6
United States Secretary of the Navy, common.topic.webpage, m.0glvvsy
Ronald Reagan, military.military_person.participated_in_conflicts, World War II
World War II, military.military_conflict.commanders, m.059b7cc
m.0w5vmcb, military.military_command.military_conflict, World War II
m.0b6b7yk, government.government_position_held.governmental_body, United States Department of Defense
m.03fx7_v, government.government_position_held.office_holder, Benjamin Harrison
World War II, military.military_conflict.commanders, m.04h_hmh
m.0glvvsy, common.webpage.topic, United States Secretary of the Navy
Assistant Secretary of the Navy, government.government_office_or_title.office_holders, m.03q2j13
m.0b6b7w5, government.government_position_held.governmental_body, United States Department of Defense
m.02h77t6, military.military_command.military_commander, Lyndon B. Johnson
United States Department of the Navy, common.topic.notable_for, g.125977cfz
World War II, military.military_conflict.commanders, m.0w5r8rm
m.0b6b7xy, government.government_position_held.office_position_or_title, United States Secretary of Defense
World War II, common.topic.webpage, m.09x5b2d
m.0b6b7x9, government.government_position_held.office_position_or_title, United States Secretary of Defense
Adolf Hitler, military.military_person.participated_in_conflicts, World War I
m.02hz5r6, government.government_position_held.office_holder, John F. Kennedy
World War II, common.topic.webpage, m.09ybsfr
m.04h_hmh, military.military_command.military_conflict, World War II
m.011qhxxc, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy (Research, Development and Acquisition)
World War II, military.military_conflict.commanders, m.02h7nn7
m.03q2j13, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy
m.0b6b7wt, government.government_position_held.appointed_by, Dwight D. Eisenhower
m.03fx88m, government.government_position_held.office_position_or_title, President of the United States
m.04h_hmh, military.military_command.military_commander, Dwight D. Eisenhower
Winston Churchill, military.military_person.participated_in_conflicts, World War I
m.03fx81_, government.government_position_held.office_holder, Lyndon B. Johnson
m.0446b9j, government.government_position_held.office_holder, Herbert Hoover
m.03fx82m, government.government_position_held.office_position_or_title, President of the United States
World War II, common.topic.webpage, m.09wxv0j
Dwight D. Eisenhower, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09yggz2
m.04jsy_4, government.government_position_held.governmental_body, United States Department of Defense
m.03q2j13, government.government_position_held.office_holder, Henry L. Roosevelt
World War II, common.topic.webpage, m.0b46rff
United States Department of Defense, government.governmental_body.component_bodies, United States Department of the Navy
Dwight D. Eisenhower, military.military_person.participated_in_conflicts, World War I
United States Department of the Navy, organization.organization.child, m.0gl5c0_
United States Secretary of the Navy, common.topic.article, m.0c02w
m.0w5s7wq, military.military_command.military_conflict, World War II
m.03fx7j8, government.government_position_held.office_position_or_title, President of the United States
m.02kzpyv, government.government_position_held.office_holder, Ronald Reagan
Władysław Sikorski, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.0b46p4g
Josip Broz Tito, military.military_person.participated_in_conflicts, World War II
m.010g2w70, government.government_position_held.governmental_body, United States Department of Defense
Charles de Gaulle, military.military_person.participated_in_conflicts, World War II
George S. Patton, military.military_commander.military_commands, m.0y7_lvp
m.0b6b7xt, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0478pm4, military.military_command.military_conflict, World War II
m.04469yh, government.government_position_held.office_position_or_title, President of the United States
United States Department of the Navy, government.government_agency.jurisdiction, United States of America
m.03fx838, government.government_position_held.office_holder, Woodrow Wilson
World War II, common.topic.webpage, m.09yf8lh
World War II, military.military_conflict.commanders, m.0w5vmcb
m.02h7nns, military.military_command.military_commander, Adolf Hitler
United States Secretary of the Navy, government.government_office_or_title.office_holders, m.09w3qtm
World War II, common.topic.webpage, m.09x7jp_
m.0nd7wz9, government.government_position_held.governmental_body, United States Department of Defense
m.02h7nns, military.military_command.military_conflict, World War II
United States Department of the Navy, government.governmental_body.members, m.03q2j13
m.03q2j0h, government.government_position_held.office_holder, Theodore Douglas Robinson
World War II, military.military_conflict.commanders, m.02h7nns
m.03q2h_9, government.government_position_held.office_position_or_title, President of the United States
Archibald Wavell, 1st Earl Wavell, military.military_person.participated_in_conflicts, World War II
United States of America, military.military_combatant.belongs_to_combatant_group, Allies of World War II
Harry S. Truman, organization.organization_founder.organizations_founded, United States Department of Defense
World War II, common.topic.webpage, m.09y0608
m.010_09yn, military.military_command.military_conflict, World War II
m.03fx8c3, government.government_position_held.office_holder, Rutherford B. Hayes
m.09x5b2d, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09y8d_t
World War II, common.topic.webpage, m.0b49czw
President of the United States, government.government_office_or_title.office_holders, m.03q2h_9
m.0b6b7w1, government.government_position_held.governmental_body, United States Department of Defense
m.02h7nn7, military.military_command.military_conflict, World War II
m.04466tx, government.government_position_held.office_holder, Andrew Johnson
m.03q2j0v, government.government_position_held.appointed_by, Warren G. Harding
Carl Gustaf Emil Mannerheim, military.military_person.participated_in_conflicts, World War I
m.0b6b7wp, government.government_position_held.office_position_or_title, United States Secretary of Defense
Theodore Roosevelt, Jr., military.military_person.participated_in_conflicts, World War I
m.04466xm, government.government_position_held.office_holder, James Madison
World War II, common.topic.webpage, m.09wsxxn
United States Department of Defense, government.governmental_body.offices_positions, Under Secretary of Defense for Personnel and Readiness
m.0b6b7w9, government.government_position_held.office_position_or_title, United States Secretary of Defense
World War II, military.military_conflict.commanders, m.0478pm4
m.0w5t9rt, military.military_command.military_conflict, World War II
m.03fx8c3, government.government_position_held.office_position_or_title, President of the United States
World War II, common.topic.webpage, m.09yybjl
m.0b6b7wf, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0b6b7wy, government.government_position_held.governmental_body, United States Department of Defense
Benito Mussolini, military.military_person.participated_in_conflicts, World War II
m.05rln07, event.speech_or_presentation.speaker_s, Franklin D. Roosevelt
m.02h7nmf, military.military_command.military_conflict, World War II
United States Department of the Navy, organization.organization.parent, m.0cm652s
m.03q2j13, government.government_position_held.governmental_body, United States Department of the Navy
World War II, common.topic.webpage, m.09wl5j0
m.0b6b7xp, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0wrqn8k, organization.leadership.role, United States Secretary of the Navy
United States of America, people.person.nationality, Franklin D. Roosevelt
m.09w3qtm, government.government_position_held.office_position_or_title, United States Secretary of the Navy
Adolf Hitler, military.military_commander.military_commands, m.02h7nns
m.0b6b7wp, government.government_position_held.appointed_by, Dwight D. Eisenhower
World War II, common.topic.webpage, m.09y6kxc
United States Department of Defense, government.governmental_body.offices_positions, United States Secretary of Defense
Theodore Roosevelt, Jr., military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09ydx3t
Assistant Secretary of the Navy (Research, Development and Acquisition), common.topic.notable_types, Government Office or Title
m.02h7nmz, military.military_command.military_conflict, World War II
m.03q2j0h, government.government_position_held.office_position_or_title, Assistant Secretary of the Navy
m.0446b70, government.government_position_held.office_holder, Jimmy Carter
President of the United States, government.government_office_or_title.jurisdiction, United States of America
m.09w3qtm, government.government_position_held.governmental_body, United States Department of Defense
m.09y9l5w, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09yj2jt
m.0b6b7x5, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.03fx88b, government.government_position_held.office_position_or_title, President of the United States
m.09xr1l4, common.webpage.topic, World War II
m.03q2j13, government.political_appointer.appointees, Franklin D. Roosevelt
m.03fx8cf, government.government_position_held.office_position_or_title, President of the United States
m.02h77t6, military.military_command.military_conflict, World War II
m.03q2h_9, government.government_position_held.office_holder, Franklin D. Roosevelt
World War II, common.topic.webpage, m.09x4cx1
United States Department of the Navy, government.governmental_body.members, m.011qhxxc
m.0b6b7xk, government.government_position_held.office_position_or_title, United States Secretary of Defense
Assistant Secretary of the Navy, government.government_office_or_title.office_holders, m.03q2hyl
m.03fx817, government.government_position_held.office_holder, Harry S. Truman
Assistant Secretary of the Navy, common.topic.notable_types, Government Office or Title
World War II, common.topic.webpage, m.09y5hqr
Lyndon B. Johnson, military.military_person.participated_in_conflicts, World War II
m.03fx899, government.government_position_held.office_holder, Theodore Roosevelt
m.0b6b7w9, government.government_position_held.governmental_body, United States Department of Defense
m.01xrx8q, government.government_position_held.office_holder, George H. W. Bush
United States Department of the Navy, government.governmental_body.members, m.03q2h_j
World War II, common.topic.webpage, m.0b49cc7
World War II, military.military_conflict.commanders, m.0w5t9rt
m.03fx83k, government.government_position_held.office_holder, William Howard Taft
Maurice Gamelin, military.military_person.participated_in_conflicts, World War II
World War II, common.topic.webpage, m.09yjnz5
United States Secretary of the Navy, government.government_office_or_title.governmental_body_if_any, United States Department of the Navy
m.0w5r8rm, military.military_command.military_conflict, World War II
United States Secretary of the Navy, government.government_office_or_title.office_holders, m.09s664p
World War II, common.topic.webpage, m.09y9l5w
m.010g2w70, government.government_position_held.office_position_or_title, United States Secretary of the Navy
Assistant Secretary of the Navy (Research, Development and Acquisition), government.government_office_or_title.office_holders, m.011qhxxc
US President, common.topic.notable_types, Franklin D. Roosevelt
m.0w5q2sz, military.military_command.military_conflict, World War II
m.0b6b7y9, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.04jx14r, military.military_command.military_conflict, World War II
World War II, event.speech_or_presentation.speech_topic, m.05rln07
m.0b6b7wk, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7x5, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7x9, government.government_position_held.governmental_body, United States Department of Defense
United States Department of the Navy, government.governmental_body.members, m.03q2j0h
m.03fx899, government.government_position_held.office_position_or_title, President of the United States
United States Secretary of the Navy, organization.role.leaders, m.0wrqn8k
United States Department of the Navy, government.government_position_held.governmental_body, m.03q2j13
World War II, common.topic.webpage, m.09xss79
Assistant Secretary of the Navy, government.government_office_or_title.office_holders, m.03q2j0v
m.0b6b7xk, government.government_position_held.governmental_body, United States Department of Defense
m.040b_7k, government.government_position_held.office_holder, John Quincy Adams
m.0b6b7wk, government.government_position_held.office_position_or_title, United States Secretary of Defense
Gerald Ford, military.military_person.participated_in_conflicts, World War II
United States Department of Defense, organization.organization.founders, Harry S. Truman
m.03fx83v, government.government_position_held.office_position_or_title, President of the United States
m.03q2h_j, government.politician.government_positions_held, Franklin D. Roosevelt
m.04466xb, government.government_position_held.office_holder, John Adams
m.0wqb4qb, government.government_position_held.governmental_body, United States Department of Defense
m.09x_3c3, common.webpage.topic, World War II
World War II, military.military_conflict.commanders, m.0w5s7wq
m.0cm652s, organization.organization_relationship.child, United States Department of the Navy
m.03q2j13, government.government_position_held.appointed_by, Franklin D. Roosevelt
Assistant Secretary of the Navy, government.government_office_or_title.office_holders, m.03q2h_j
World War II, common.topic.webpage, m.09x_3c3
United States Secretary of the Navy, common.topic.image, MabusRay
World War II, common.topic.webpage, m.09xr1l4
World War II, common.topic.webpage, m.09ygg0r
World War II, common.topic.webpage, m.09x773p
m.0b6b7yp, government.government_position_held.governmental_body, United States Department of Defense
m.03q2j0h, government.government_position_held.governmental_body, United States Department of the Navy
m.0446bdb, government.government_position_held.office_position_or_title, President of the United States
m.0b6b7wf, government.government_position_held.appointed_by, Harry S. Truman
m.0b6b7y1, government.government_position_held.governmental_body, United States Department of Defense
World War II, common.topic.webpage, m.09xrmvz
m.02hz5r6, government.government_position_held.office_position_or_title, President of the United States
m.0b6b7wt, government.government_position_held.governmental_body, United States Department of Defense
Allies of World War II, military.military_combatant.includes_allies, United States of America
m.0gl5c0_, organization.organization_relationship.parent, United States Department of the Navy
m.0b6b7xp, government.government_position_held.governmental_body, United States Department of Defense
m.01xrx8q, government.government_position_held.office_position_or_title, President of the United States
m.0b6b7yf, government.government_position_held.governmental_body, United States Department of Defense
World War II, common.topic.webpage, m.09wsrnl
Carl Gustaf Emil Mannerheim, military.military_person.participated_in_conflicts, World War II
m.0b6b7yp, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.03q2h_j, government.government_position_held.office_holder, Franklin D. Roosevelt
m.03fx83k, government.government_position_held.office_position_or_title, President of the United States
Edward Rydz-Śmigły, military.military_person.participated_in_conflicts, World War II
World War II, military.military_conflict.commanders, m.04jx14r
World War II, military.military_conflict.commanders, m.0w5sb93
World War II, military.military_conflict.commanders, m.0w5q83x
World War II, common.topic.webpage, m.09w9d_p
m.03fx83v, government.government_position_held.office_holder, Zachary Taylor
World War II, common.topic.webpage, m.09w7qyh
Maurice Gamelin, military.military_person.participated_in_conflicts, World War I
World War II, military.military_conflict.commanders, m.0w5qcxy
m.0whvkx3, government.government_position_held.governmental_body, United States Department of Defense
United States Secretary of the Navy, common.topic.notable_for, g.1258f96b9
m.0b6b7wt, government.government_position_held.office_position_or_title, United States Secretary of Defense
George H. W. Bush, military.military_person.participated_in_conflicts, World War II
World War II, military.military_conflict.commanders, m.02h7npb
m.0b6b7yf, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.02h7np1, military.military_command.military_conflict, World War II
World War II, common.topic.webpage, m.09xyz9p
m.0n3nz1d, government.government_position_held.governmental_body, United States Department of Defense
Archibald Wavell, 1st Earl Wavell, military.military_person.participated_in_conflicts, World War I
World War II, common.topic.webpage, m.09ysx61
Tadeusz Bór-Komorowski, military.military_person.participated_in_conflicts, World War I
World War II, common.topic.webpage, m.09xxnlt
m.0b6b7y5, government.government_position_held.governmental_body, United States Department of Defense
United States Secretary of the Navy, government.government_office_or_title.office_holders, m.09w3mzl
President of the United States, freebase.type_profile.equivalent_topic, US President
World War II, military.military_conflict.commanders, m.02h7nnj
m.02h7nnj, military.military_command.military_conflict, World War II
m.0446b9r, government.government_position_held.office_position_or_title, President of the United States
World War II, military.military_conflict.commanders, m.02h7np1
World War II, common.topic.webpage, m.09wgp7j
m.02h6phn, government.government_position_held.office_holder, George W. Bush
World War II, common.topic.webpage, m.0b475k_
United States Secretary of the Navy, government.government_office_or_title.office_holders, m.010g2w70
m.0b6b7y1, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.04466xz, government.government_position_held.office_holder, James Monroe
m.059b7cc, military.military_command.military_conflict, World War II
m.04469y8, government.government_position_held.office_holder, James K. Polk
World War II, military.military_conflict.commanders, m.02h7nmf
United States Secretary of the Navy, common.topic.notable_types, Government Office or Title
m.0446b70, government.government_position_held.office_position_or_title, President of the United States
World War II, common.topic.webpage, m.0b48dsf
United States Department of the Navy, government.governmental_body.members, m.03q2h_j
m.0b6b7x1, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.09w9d_p, common.webpage.topic, World War II
World War II, common.topic.webpage, m.09yvl19
m.0b6b7wk, government.government_position_held.appointed_by, Dwight D. Eisenhower
John F. Kennedy, military.military_person.participated_in_conflicts, World War II
m.03fx85y, government.government_position_held.office_holder, William McKinley
m.03q2h_9, government.government_position_held.office_holder, Franklin D. Roosevelt
United States Secretary of the Navy, people.appointed_role.appointment, m.07kmj76
m.03fx82m, government.government_position_held.office_holder, James A. Garfield
World War II, common.topic.webpage, m.09y4ljx
World War II, military.military_conflict.commanders, m.010_09yn
World War II, military.military_conflict.commanders, m.0y7_lvp
m.0b6b7y9, government.government_position_held.governmental_body, United States Department of Defense
United States Department of the Navy, government.governmental_body.members, m.03q2hyl
United States Department of the Navy, common.topic.article, m.03cv2b
m.0b6b7wf, government.government_position_held.governmental_body, United States Department of Defense
World War II, military.military_conflict.commanders, m.02h7nmz
m.03fx88b, government.government_position_held.office_holder, Warren G. Harding
United States Secretary of the Navy, base.schemastaging.context_name.plural, m.0w0qty7
Assistant Secretary of the Navy, government.government_office_or_title.office_holders, m.03q2j0h
World War II, common.topic.webpage, m.09wwvtm

Answer: Franklin D. Roosevelt