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: what year did us invaded iraq? 
Knowledge Triplets: m.09y87th, common.webpage.topic, Iraq War
Iraq War, base.fight.subject_of_protest.protests_about_this, March 17, 2007 anti-war protest
m.0b4668y, common.webpage.topic, Iraq War
History of Iraq, time.event.included_in_event, Iraq War
The Iraq War, book.written_work.subjects, Asia
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Babaker Shawkat B. Zebari
March 17, 2007 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
Iraq War, book.book_subject.works, Countdown of 10 Amazing Moments from the Year 2011
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Saddam Hussein
2003 invasion of Iraq, time.event.includes_event, Operation Northern Delay
Takedown: The 3rd Infantry Division's Twenty-One Day Assault on Baghdad, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.combatants, m.0bhds75
2008 Iraqi Day of Ashura fighting, time.event.included_in_event, Iraqi insurgency
Iraq War, book.book_subject.works, Last One In
Iraq War, common.topic.webpage, m.0b460r4
2003 invasion of Iraq, time.event.includes_event, Battle of Samawah
m.0b47q0q, common.webpage.topic, Iraq War
Iraq War, common.topic.notable_for, g.125fmgnrm
America's Secret War, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, base.fight.subject_of_protest.protests_about_this, February 15, 2003 anti-war protest
The Iraq War, book.written_work.subjects, Iraq
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Abdullah Hussein Jebara
2003 invasion of Iraq, book.book_subject.works, Thieves of Baghdad
101st Airborne Division helos during Operation Iraqi Freedom, common.image.appears_in_topic_gallery, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Tommy Franks
2003 invasion of Iraq, book.book_subject.works, Bush at War
Iraqi insurgency, time.event.includes_event, 2008 Iraqi Day of Ashura fighting
Halloween 2002 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
Battle of the Karbala Gap, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Nick Popaditch
m.04cnpk2, common.webpage.topic, Iraq War
2008 Iraqi Day of Ashura fighting, time.event.included_in_event, Iraq War
Battle of Umm Qasr, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.combatants, m.043wpnt
Iraq War, common.topic.webpage, m.09xzp8b
Iraq War, common.topic.webpage, m.0b46_gv
The Iraq War, book.written_work.subjects, World
Iraq War, common.topic.webpage, m.09xlk7j
Iraq spring fighting of 2008, time.event.included_in_event, Iraq War
March 19, 2008 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
2003 invasion of Iraq, book.book_subject.works, Will They Ever Trust Us Again?
2003 attack on Karbala, time.event.locations, Iraq
Operation Panther Squeeze, time.event.included_in_event, 2003 invasion of Iraq
Iraq, book.book_subject.works, The Iraq War
2003 invasion of Iraq, common.topic.notable_types, Military Conflict
Halloween 2002 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
Iraqi insurgency, common.topic.image, An Iraqi insurgent in al-Anbar in early 2004.
2003 invasion of Iraq, book.book_subject.works, Rogue Nation
2003 invasion of Iraq, time.event.includes_event, Battle of Nasiriyah
Iraq War, time.event.includes_event, Operation Arbead II
Battle of Hillah, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Tommy Franks
Iraq War, book.book_subject.works, Secret History of the Iraq War
January 27, 2007 anti-war protest, base.argumentmaps.moral_defence.morally_disputed_activity, Iraq War
m.09w6djb, common.webpage.topic, Iraq War
The Iraq War, book.written_work.subjects, Political Science
Iraq War, time.event.includes_event, Battle of Al-Fallujah, March 2004
Pat Tillman, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
The Iraq War Reader, common.topic.notable_for, g.1255cyj8n
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Iraqi Armed Forces
The Iraq War, book.written_work.subjects, History
Cobra II, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, book.book_subject.works, Iraq
The Iraq War, book.written_work.subjects, Politics
Nick Popaditch, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
Battle of Baghdad, time.event.included_in_event, 2003 invasion of Iraq
Iraq War, time.event.includes_event, Iraq spring fighting of 2008
Battle of Al-Fallujah, March 2004, time.event.included_in_event, Iraq War
2003 invasion of Iraq, base.culturalevent.event.entity_involved, George W. Bush
Saddam Hussein, book.interviewee.interviews_given, February 2003 Saddam Hussein interview
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Lloyd Austin
m.043wpq4, military.casualties.military_conflict, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.09yk4h_
February 15, 2003 anti-war protest, base.argumentmaps.moral_defence.morally_disputed_activity, Iraq War
Iraq War, common.topic.webpage, m.09wtw3c
Iraq War, common.topic.image, Iraq header 2
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Ansar al-Islam
Iraq War, common.topic.webpage, m.0b47q0q
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Islamic State of Iraq and the Levant
At the Center of the Storm, book.written_work.subjects, 2003 invasion of Iraq
The Curious Incident of the WMD in Iraq, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, common.topic.image, UStanks baghdad 2003
State of Denial: Bush at War, Part III, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, book.book_subject.works, Hide and Seek: The Search for Truth in Iraq
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, United States of America
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Patriotic Union of Kurdistan
One Bullet Away, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, book.book_subject.works, The New American Empire
Iraq War, time.event.includes_event, 2004 Fallujah ambush
Iraq War, base.fight.subject_of_protest.protests_about_this, September 24, 2005 anti-war protest
The War in Iraq, common.topic.article, m.063j264
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Kurdistan Islamic Group
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Barzan Ibrahim al-Tikriti
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Jamaat Ansar al-Sunna
February 2003 Saddam Hussein interview, common.topic.notable_types, Interview
Iraq War, base.fight.subject_of_protest.protests_about_this, January 20, 2005 counter-inaugural protest
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Masoud Barzani
Battle of Samawah, time.event.included_in_event, 2003 invasion of Iraq
Secret History of the Iraq War, book.written_work.subjects, International relations
February 15, 2003 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
The War in Iraq, common.topic.notable_for, g.125dm__ww
February 2003 Saddam Hussein interview, common.topic.notable_for, g.1255pd8yn
m.09y848s, common.webpage.topic, Iraq War
2003 invasion of Iraq, book.book_subject.works, Rise of the Vulcans: The History of Bush's War Cabinet
Iraq War, base.fight.subject_of_protest.protests_about_this, Port of Tacoma protests, March 2007
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Qusay Hussein
Iraq War, common.topic.article, m.0d06vj
UStanks baghdad 2003, common.image.appears_in_topic_gallery, 2003 invasion of Iraq
Battle of Al Kut, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Uday Hussein
Iraq War, common.topic.webpage, m.09ybwz1
m.05v8gpl, award.award_honor.honored_for, The War in Iraq
Iraq War, base.fight.subject_of_protest.protests_about_this, Halloween 2002 anti-war protest
2003 invasion of Iraq, military.military_conflict.commanders, m.0w5qg9h
January 27, 2007 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
Iraq War, base.fight.subject_of_protest.protests_about_this, March 19, 2008 anti-war protest
m.0bhds75, military.military_combatant_group.conflict, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.09y87th
Withdrawal of U.S. troops from Iraq, time.event.locations, Iraq
The Iraq War, book.book.genre, Mathematics
Iraq War, time.event.includes_event, g.11b6gfkchh
February 2003 Saddam Hussein interview, book.interview.interviewer, Dan Rather
Iraq War, common.topic.webpage, m.0b47mtt
m.09xvt0t, common.webpage.topic, Iraq War
The War I Always Wanted: The Illusion of Glory and the Reality of War, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, book.book_subject.works, The War I Always Wanted: The Illusion of Glory and the Reality of War
2003 attack on Karbala, time.event.included_in_event, Iraq War
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Pat Tillman
The Iraq War, book.written_work.subjects, Middle East
Iraq War, common.topic.webpage, m.09xvt0t
m.043wpqd, military.casualties.military_conflict, 2003 invasion of Iraq
Iraq War, base.argumentmaps.morally_disputed_activity.moral_defence, February 15, 2003 anti-war protest
James Mattis, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
September 24, 2005 anti-war protest, base.argumentmaps.moral_defence.morally_disputed_activity, Iraq War
m.04m0g7c, military.military_combatant_group.conflict, 2003 invasion of Iraq
The Iraq War, book.written_work.subjects, International relations
m.043wpn_, military.military_combatant_group.conflict, 2003 invasion of Iraq
2003 invasion of Iraq, time.event.includes_event, Operation Ivy Blizzard
Iraq War, common.topic.webpage, m.0b4668y
UStanks baghdad 2003, common.image.appears_in_topic_gallery, Withdrawal of U.S. troops from Iraq
The Iraq War, common.topic.article, m.064m6wq
January 20, 2005 counter-inaugural protest, base.fight.protest.subject_of_protest, Iraq War
Iraq War, common.topic.webpage, m.09y848s
2003 invasion of Iraq, military.military_conflict.casualties, m.043wpqn
February 2003 Saddam Hussein interview, book.interview.interviewee, Saddam Hussein
Iraq War, base.culturalevent.event.entity_involved, George W. Bush
Battle of Basra, time.event.included_in_event, 2003 invasion of Iraq
The Iraq War, book.written_work.subjects, 21st century
Battle of Nasiriyah, time.event.included_in_event, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.09ybygs
2003 invasion of Iraq, military.military_conflict.combatants, m.04m0g7c
Iraq War, common.topic.webpage, m.09xfqc5
Withdrawal of U.S. troops from Iraq, base.argumentmaps.intention.was_intended_for_event, m.05z179k
Secret History of the Iraq War, book.book.editions, Secret History of the Iraq War
2003 invasion of Iraq, common.topic.notable_for, g.1259f0j6_
2003 invasion of Iraq, time.event.includes_event, Operation Viking Hammer
Jessica Lynch, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
m.0b481k7, common.webpage.topic, Iraq War
Iraq War, time.event.start_date, 2003-03-20
2003 invasion of Iraq, time.event.includes_event, Operation Panther Squeeze
20 March 2003 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
January 27, 2007 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
m.09xt8dg, common.webpage.topic, Iraq War
Iraq War, time.event.end_date, 2011-12-18
Bush at War, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.09xpm72
Iraq War, base.culturalevent.event.entity_involved, Saddam Hussein
Withdrawal of U.S. troops from Iraq, common.topic.image, UStanks baghdad 2003
2003 invasion of Iraq, book.book_subject.works, Takedown: The 3rd Infantry Division's Twenty-One Day Assault on Baghdad
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Iraqi National Congress
Withdrawal of U.S. troops from Iraq, common.topic.notable_types, Military Conflict
2003 invasion of Iraq, time.event.includes_event, 2003 attack on Karbala
Iraq War, time.event.includes_event, History of Iraq
2003 invasion of Iraq, time.event.includes_event, Battle of Umm Qasr
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Peshmerga
Iraq War, common.topic.image, m.02gvb81
2004 Iraq KBR convoy ambush, time.event.included_in_event, Iraq War
m.09ygkbj, common.webpage.topic, Iraq War
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Kosrat Rasul Ali
2003 invasion of Iraq, book.book_subject.works, Cobra II
Iraq War, book.book_subject.works, The Fall of Baghdad
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Islamic Army in Iraq
Secret History of the Iraq War, book.written_work.subjects, Middle East
2003 invasion of Iraq, military.military_conflict.casualties, m.043wpqd
m.0w5qg9h, military.military_command.military_conflict, 2003 invasion of Iraq
Hide and Seek: The Search for Truth in Iraq, book.written_work.subjects, 2003 invasion of Iraq
m.09xm_j9, common.webpage.topic, Iraq War
Iraq War, time.event.includes_event, 2008 Turkish incursion into northern Iraq
m.09xh36f, common.webpage.topic, Iraq War
Invasion of Kuwait, base.culturalevent.event.entity_involved, Iraq
What Was Asked of Us, book.written_work.subjects, 2003 invasion of Iraq
February 2003 Saddam Hussein interview, base.argumentmaps.moral_defence.supporter, Saddam Hussein
2003 invasion of Iraq, book.book_subject.works, Against All Enemies: Inside America's War on Terror
Iraq War, base.argumentmaps.morally_disputed_activity.moral_defence, February 2003 Saddam Hussein interview
January 20, 2005 counter-inaugural protest, base.argumentmaps.motivated_event.motive, Iraq War
Iraq War, common.topic.subject_of, Don Mathis
2003 invasion of Iraq, time.event.includes_event, Battle of Al Kut
Iraq War, common.topic.webpage, m.09xm_j9
2003 attack on Karbala, time.event.included_in_event, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.09xm9rr
2003 attack on Karbala, base.culturalevent.event.entity_involved, Saddam Hussein
Iraq War, common.topic.webpage, m.09wdkxb
Withdrawal of U.S. troops from Iraq, time.event.included_in_event, Iraq War
20 March 2003 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Fedayeen Saddam
2003 invasion of Iraq, time.event.includes_event, Battle of Baghdad
m.09ynkq3, common.webpage.topic, Iraq War
Secret History of the Iraq War, common.topic.notable_for, g.125cxv2bj
Iraq War, common.topic.webpage, m.0b45vxx
2003 invasion of Iraq, time.event.includes_event, Battle of Al Faw
2003 invasion of Iraq, book.book_subject.works, A Long Short War
Rise of the Vulcans: The History of Bush's War Cabinet, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, time.event.includes_event, Iraq spring fighting of 2004
Thieves of Baghdad, book.written_work.subjects, 2003 invasion of Iraq
Plan of Attack, book.written_work.subjects, 2003 invasion of Iraq
The Iraq War, book.book.editions, The Iraq war
The Iraq War, book.book.editions, The Iraq War
Iraq War, time.event.locations, Iraq
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Arabs
m.09wdkxb, common.webpage.topic, Iraq War
Abdullah Hussein Jebara, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
Iraq War, common.topic.webpage, m.04cnpk2
2003 invasion of Iraq, book.book_subject.works, The Curious Incident of the WMD in Iraq
m.043wpnt, military.military_combatant_group.conflict, 2003 invasion of Iraq
Iraq War, film.film_subject.films, Happy New Year
2003 invasion of Iraq, book.book_subject.works, Generation Kill
The Iraq War, book.written_work.subjects, Military history
Iraq War, common.topic.webpage, m.09y5pm8
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Brian Burridge
Iraq War, base.fight.subject_of_protest.protests_about_this, 20 March 2003 anti-war protest
Iraq War, common.topic.webpage, m.0b481k7
2003 invasion of Iraq, common.topic.article, m.01cpp5
Against All Enemies: Inside America's War on Terror, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, James Mattis
Iraq War, time.event.includes_event, g.11b6fk60sh
Tommy Franks, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
March 17, 2007 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
Iraq War, book.book_subject.works, Fiasco: The American Military Adventure in Iraq
m.0b460r4, common.webpage.topic, Iraq War
Operation Iron Justice, time.event.included_in_event, 2003 invasion of Iraq
Invasion, base.argumentmaps.abstract_moral_dispute.particular_instances, 2003 invasion of Iraq
Iraq War, time.event.includes_event, Withdrawal of U.S. troops from Iraq
m.09y5pm8, common.webpage.topic, Iraq War
Iraq War, common.topic.webpage, m.09ynkq3
Battle of Debecka Pass, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, book.book_subject.works, The Madness of King George
Iraq War, common.topic.webpage, m.09xt8dg
m.043wpqn, military.casualties.military_conflict, 2003 invasion of Iraq
Iraq War, time.event.includes_event, 2004 Iraq KBR convoy ambush
2003 invasion of Iraq, common.topic.image, 101st Airborne Division helos during Operation Iraqi Freedom
Bush in Babylon, book.written_work.subjects, 2003 invasion of Iraq
Countdown of 10 Amazing Moments from the Year 2011, book.written_work.subjects, Iraq War
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Special Groups
2003 invasion of Iraq, base.argumentmaps.morally_disputed_activity.instance_of_abstract_moral_dispute, Invasion
Operation Viking Hammer, time.event.included_in_event, 2003 invasion of Iraq
m.02gvb81, common.image.appears_in_topic_gallery, Iraq War
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Jalal Talabani
m.09xzp8b, common.webpage.topic, Iraq War
m.09ybygs, common.webpage.topic, Iraq War
m.09xfqc5, common.webpage.topic, Iraq War
2008 Iraqi Day of Ashura fighting, base.culturalevent.event.entity_involved, Ahmad al-Hassan
Iraq War, time.event.includes_event, 2003 invasion of Iraq
Iraq War, time.event.includes_event, 2008 Iraqi Day of Ashura fighting
U.S. Army 3rd Brigade Combat Team of the 3rd Infantry Division, common.image.appears_in_topic_gallery, 2003 invasion of Iraq
Operation Northern Delay, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, time.event.includes_event, Battle of the Karbala Gap
Worse than Watergate, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Kurdistan Democratic Party
Will They Ever Trust Us Again?, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Jessica Lynch
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Arab Socialist Ba'ath Party – Iraq Region
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Ali Hassan al-Majid
September 24, 2005 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
2008 Iraqi Day of Ashura fighting, base.culturalevent.event.entity_involved, Soldiers of Heaven
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Ba'ath Party
February 2003 Saddam Hussein interview, base.argumentmaps.moral_defence.moral_agent_blamed, George W. Bush
September 15, 2007 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
Iraq War, common.topic.webpage, m.09x0jfl
Iraq spring fighting of 2004, time.event.included_in_event, Iraq War
2003 invasion of Iraq, military.military_conflict.combatants, m.043wpn_
2003 invasion of Iraq, military.military_conflict.casualties, m.043wpq4
The Iraq War, common.topic.notable_for, g.12561xhyl
m.09wtw3c, common.webpage.topic, Iraq War
2003 invasion of Iraq, book.book_subject.works, State of Denial: Bush at War, Part III
2003 invasion of Iraq, book.book_subject.works, Bush in Babylon
The Madness of King George, book.written_work.subjects, 2003 invasion of Iraq
m.09ybwz1, common.webpage.topic, Iraq War
September 15, 2007 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
Iraq War, time.event.includes_event, Operation Sledgehammer (2007)
Ali Hassan al-Majid, military.military_person.participated_in_conflicts, 2003 invasion of Iraq
Iraq War, time.event.includes_event, 2003 attack on Karbala
A Long Short War, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Izzat Ibrahim al-Douri
2003 invasion of Iraq, military.military_conflict.combatants, m.0bhfcw5
m.0bhfcw5, military.military_combatant_group.conflict, 2003 invasion of Iraq
February 2003 Saddam Hussein interview, base.argumentmaps.moral_defence.morally_disputed_activity, Iraq War
2003 invasion of Iraq, time.event.includes_event, Operation Iron Justice
Iraq War, time.event.start_date, 2003-03-20
Iraq War, time.event.includes_event, Trial of Saddam Hussein
2008 Turkish incursion into northern Iraq, time.event.included_in_event, Iraq War
2003 invasion of Iraq, military.military_conflict.military_personnel_involved, Ali Hassan al-Majid
Happy New Year, film.film.subjects, Iraq War
Iraq War, common.topic.webpage, m.09xh36f
The New American Empire, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, base.culturalevent.event.entity_involved, 2003 invasion of Iraq
Battle of Najaf, time.event.included_in_event, 2003 invasion of Iraq
2003 invasion of Iraq, book.book_subject.works, At the Center of the Storm
Iraq War, common.topic.webpage, m.09ygkbj
2003 invasion of Iraq, time.event.includes_event, Battle of Debecka Pass
Withdrawal of U.S. troops from Iraq, base.culturalevent.event.entity_involved, Peace Companies
2003 invasion of Iraq, book.book_subject.works, Plan of Attack
2003 invasion of Iraq, common.topic.image, U.S. Army 3rd Brigade Combat Team of the 3rd Infantry Division
Iraq War, base.argumentmaps.morally_disputed_activity.moral_defence, January 27, 2007 anti-war protest
m.09yk4h_, common.webpage.topic, Iraq War
February 2003 Saddam Hussein interview, common.topic.article, m.090y1z
2004 Fallujah ambush, time.event.included_in_event, Iraq War
2003 invasion of Iraq, book.book_subject.works, What Was Asked of Us
Operation Ivy Blizzard, time.event.included_in_event, 2003 invasion of Iraq
2008 Iraqi Day of Ashura fighting, common.topic.notable_types, Military Conflict
2003 invasion of Iraq, time.event.locations, Iraq
2003 invasion of Iraq, book.book_subject.works, America's Secret War
Battle of Karbala, time.event.included_in_event, 2003 invasion of Iraq
Iraq War, time.event.includes_event, Battle of Baghdad
Iraq War, book.book_subject.works, The Iraq War
Generation Kill, book.written_work.subjects, 2003 invasion of Iraq
Iraq War, base.fight.subject_of_protest.protests_about_this, September 15, 2007 anti-war protest
February 15, 2003 anti-war protest, base.fight.protest.subject_of_protest, Iraq War
Iraqi insurgency, time.event.includes_event, October 2011 Baghdad bombings
Battle of Al Faw, time.event.included_in_event, 2003 invasion of Iraq
Iraq War, time.event.includes_event, Iraq Inquiry
Rogue Nation, book.written_work.subjects, 2003 invasion of Iraq
2003 invasion of Iraq, time.event.includes_event, Battle of Karbala
2003 invasion of Iraq, base.culturalevent.event.entity_involved, Ahmed Chalabi
Iraq War, base.argumentmaps.morally_disputed_activity.moral_defence, September 24, 2005 anti-war protest
2003 invasion of Iraq, book.book_subject.works, One Bullet Away
m.09xlk7j, common.webpage.topic, Iraq War
m.09xpm72, common.webpage.topic, Iraq War
Iraq War, book.book_subject.works, Now They Tell Us
September 24, 2005 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
2003 invasion of Iraq, time.event.includes_event, Battle of Basra
Iraq War, base.fight.subject_of_protest.protests_about_this, January 27, 2007 anti-war protest
2003 invasion of Iraq, book.book_subject.works, Worse than Watergate
Iraq War, common.topic.webpage, m.09w6djb
Operation Sledgehammer (2007), time.event.included_in_event, Iraq War
2003 invasion of Iraq, time.event.included_in_event, Iraq War
March 19, 2008 anti-war protest, base.argumentmaps.motivated_event.motive, Iraq War
2003 invasion of Iraq, time.event.includes_event, Battle of Hillah
m.09xm9rr, common.webpage.topic, Iraq War
Iraq War, time.event.includes_event, Operation Peregrine II
2003 invasion of Iraq, time.event.includes_event, Battle of Najaf

Answer: 2003-03-20