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: in which state was the battle of antietam fought? 
Knowledge Triplets: Richard B. Garnett, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Rich Mountain, base.culturalevent.event.entity_involved, Confederate States of America
Thomas Drayton, military.military_person.participated_in_conflicts, Battle of Antietam
Antietam Creek, geography.body_of_water.bridges, Burnside's Bridge
m.049y38p, military.military_combatant_group.conflict, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, William Smith
Battle of Gettysburg, base.culturalevent.event.entity_involved, Confederate States of America
Joseph Hooker, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Daniel Harvey Hill
Battle of Wyse Fork, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, George B. McClellan
Battle of Bentonville, base.culturalevent.event.entity_involved, Confederate States of America
Elisha F. Paxton, military.military_person.participated_in_conflicts, Battle of Antietam
George S. Greene, military.military_person.participated_in_conflicts, Battle of Antietam
First Battle of Kernstown, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Fredericksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Thomas Francis Meagher, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Gaines's Mill, base.americancivilwar.battle.military_units_involved_in_this_conflict, 14th Louisiana Infantry Regiment
James Henry Lane, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Ambrose Burnside
Battle of Cold Harbor, base.americancivilwar.battle.military_units_involved_in_this_conflict, 15th Louisiana Infantry Regiment
Battle of Waynesboro, Virginia, base.culturalevent.event.entity_involved, George Armstrong Custer
Battle of Nashville, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Albion P. Howe
George Meade, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.combatants, m.04fvfz1
Battle of Antietam, military.military_conflict.military_personnel_involved, Stonewall Jackson
Battle of Williamsburg, base.culturalevent.event.entity_involved, United States of America
Battle of Malvern Hill, base.americancivilwar.battle.military_units_involved_in_this_conflict, 10th Louisiana Infantry
Battle of Antietam, base.culturalevent.event.entity_involved, Union
Manet and the American Civil War: The Battle of U.S.S. \"Kearsarge\" and C.S.S. \"Alabama\", exhibitions.exhibition.exhibits, Battle of the U.S.S. Kearsarge and the C.S.S. Alabama
Second Battle of Winchester, base.culturalevent.event.entity_involved, Confederate States of America
Antietam National Battlefield, location.location.containedby, Maryland
Francis C. Barlow, military.military_person.participated_in_conflicts, Battle of Antietam
Sharpsburg, location.location.contains, Antietam National Battlefield
Truman Seymour, military.military_person.participated_in_conflicts, Battle of Antietam
Ranald S. Mackenzie, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Gettysburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 15th Louisiana Infantry Regiment
Narrative of the War Between the States, book.written_work.subjects, History of the United States
Edward Lloyd Thomas, military.military_person.participated_in_conflicts, Battle of Antietam
Alexander Lawton, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, William Farrar Smith
Battle of Chantilly, time.event.included_in_event, Northern Virginia Campaign
Maryland, location.location.events, Battle of North Point
Battle of Gettysburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 10th Louisiana Infantry
American Civil War, exhibitions.exhibition_subject.exhibitions_created_about_this_subject, Manet and the American Civil War: The Battle of U.S.S. \"Kearsarge\" and C.S.S. \"Alabama\"
Battle of Five Forks, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, base.americancivilwar.battle.military_units_involved_in_this_conflict, 15th Louisiana Infantry Regiment
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, American History
Maxcy Gregg, military.military_person.participated_in_conflicts, Battle of Antietam
John Bell Hood, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, common.topic.image, Battle of Antietam2
Battle of Antietam, military.military_conflict.military_personnel_involved, John Bell Hood
American Civil War, visual_art.art_subject.artwork_on_the_subject, Battle of the U.S.S. Kearsarge and the C.S.S. Alabama
Battle of the Wilderness, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Joseph Hooker
Seven Days Battles, base.culturalevent.event.entity_involved, Confederate States of America
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, common.topic.notable_for, g.1257k6mj8
Battle of Antietam, military.military_conflict.military_personnel_involved, Robert Ransom, Jr.
Battle of Spotsylvania Court House, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Harry T. Hays
Battle of Antietam, common.topic.article, m.0lkxl
Battle of Waynesboro, Virginia, common.topic.notable_types, Military Conflict
Battle of Antietam, military.military_conflict.military_personnel_involved, John Brown Gordon
m.04fvfz1, military.military_combatant_group.conflict, Battle of Antietam
Bryan Grimes, military.military_person.participated_in_conflicts, Battle of Antietam
Joseph K. Mansfield, military.military_person.participated_in_conflicts, Battle of Antietam
Antietam, book.written_work.subjects, United States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, George B. Anderson
Battle of Antietam, military.military_conflict.military_personnel_involved, William Ruffin Cox
Battle of Monocacy, base.culturalevent.event.entity_involved, Confederate States of America
David Rumph Jones, military.military_person.participated_in_conflicts, Battle of Antietam
Narrative of the War Between the States, book.written_work.author, Jubal Early
Battle of Waynesboro, Virginia, base.culturalevent.event.entity_involved, Jubal Early
Edward E. Cross, military.military_person.participated_in_conflicts, Battle of Antietam
Nathan Kimball, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Daniel Butterfield
Battle of Antietam, military.military_conflict.military_personnel_involved, William Dorsey Pender
Battle of Gettysburg, time.event.included_in_event, American Civil War
Battle of Glendale, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Thomas H. Ruger
Battle of Port Republic, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, base.culturalevent.event.entity_involved, George B. McClellan
2nd Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Battle of Antietam
Battle of Utoy Creek, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, common.image.appears_in_topic_gallery, Battle of Antietam
Charles Albright, military.military_person.participated_in_conflicts, Battle of Antietam
Manet and the American Civil War: The Battle of U.S.S. \"Kearsarge\" and C.S.S. \"Alabama\", exhibitions.exhibition.subjects, American Civil War
Battle of Antietam, common.image.size, m.02bf4_m
Battle of Antietam, military.military_conflict.military_personnel_involved, Ranald S. Mackenzie
Battle of Antietam, military.military_conflict.military_personnel_involved, Evander M. Law
Battle of Lookout Mountain, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Malvern Hill, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Battle of Antietam, military.military_conflict.military_personnel_involved, Paul Jones Semmes
Second Battle of Bull Run, base.americancivilwar.battle.military_units_involved_in_this_conflict, 15th Louisiana Infantry Regiment
William Harrow, military.military_person.participated_in_conflicts, Battle of Antietam
William Farrar Smith, military.military_person.participated_in_conflicts, Battle of Antietam
Roger Atkinson Pryor, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Charles Albright
Gettysburg Campaign, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, James Henry Lane
Antietam, common.topic.notable_types, Book
Battle of Antietam, military.military_conflict.military_personnel_involved, Fitz John Porter
Battle of Antietam, military.military_conflict.military_personnel_involved, Truman Seymour
Battle of Antietam2, common.image.appears_in_topic_gallery, Battle of Antietam
Battle of Williamsburg, base.culturalevent.event.entity_involved, Confederate States of America
Albion P. Howe, military.military_person.participated_in_conflicts, Battle of Antietam
Paul Jones Semmes, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, James A. Walker
Battle of Antietam, military.military_conflict.military_personnel_involved, Nathan George Evans
Battle of Cold Harbor, base.americancivilwar.battle.military_units_involved_in_this_conflict, 10th Louisiana Infantry
George Sykes, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, James L. Kemper
Battle of Williamsburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 10th Louisiana Infantry
Antietam Creek, location.location.partially_contained_by, m.0wg92hf
m.049y3bc, military.military_command.military_conflict, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Winfield S. Featherston
Battle of Antietam, common.topic.image, Battle of Antietam by Thulstrup
Battle of Antietam, military.military_conflict.commanders, m.049y3bc
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, History
Battle of Harpers Ferry, base.culturalevent.event.entity_involved, Confederate States of America
Narrative of the War Between the States, book.written_work.subjects, History
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.book.editions, Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War
Battle of Antietam, military.military_conflict.military_personnel_involved, William E. Starke
Battle of Antietam, military.military_conflict.military_personnel_involved, William T. Wofford
Second Battle of Bull Run, time.event.included_in_event, Northern Virginia Campaign
Gettysburg Campaign, time.event.locations, Maryland
Battle of Antietam, military.military_conflict.military_personnel_involved, Edward E. Cross
Battle of Antietam, military.military_conflict.military_personnel_involved, Benjamin G. Humphreys
Samuel D. Sturgis, military.military_person.participated_in_conflicts, Battle of Antietam
George T. Anderson, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Nelson A. Miles
Antietam, book.written_work.subjects, History
Sharpsburg, common.topic.image, Antietam National Battlefield surrounding Sharpsburg
Battle of Antietam, time.event.included_in_event, American Civil War
Maryland Campaign, common.topic.image, Confederate dead at Antietam
Battle of Roanoke Island, base.culturalevent.event.entity_involved, Confederate States of America
Antietam National Battlefield, location.location.containedby, Washington County
Sharpsburg, location.location.events, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, George S. Greene
Antietam National Battlefield, travel.tourist_attraction.near_travel_destination, Sharpsburg
Henry Warner Slocum, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Olustee, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam by Thulstrup, common.image.appears_in_topic_gallery, Battle of Antietam
Battle of Fredericksburg, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, location.location.events, Maryland
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.author, James M. McPherson
Ambrose R. Wright, military.military_person.participated_in_conflicts, Battle of Antietam
m.0wg92hf, location.partial_containment_relationship.partially_contains, Antietam Creek
Maryland, location.location.partially_contains, Antietam Creek
James L. Kemper, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam by Thulstrup, common.image.size, m.02gnqv5
Battle of Waynesboro, Virginia, military.military_conflict.military_personnel_involved, Jubal Early
Battle of Antietam, military.military_conflict.military_personnel_involved, Henry Baxter
Battle of Antietam, military.military_conflict.military_personnel_involved, Samuel D. Sturgis
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.book.genre, Non-fiction
William Smith, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam2, common.image.size, m.05tw1t2
Battle of Antietam, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Battle of Antietam, military.military_conflict.military_personnel_involved, David Rumph Jones
Battle of Antietam, military.military_conflict.military_personnel_involved, Lucius Fairchild
Alfred Iverson, Jr., military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Appomattox Court House, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Seven Pines, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, base.americancivilwar.battle.military_units_involved_in_this_conflict, 10th Louisiana Infantry
Nathan George Evans, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Waynesboro, Virginia, time.event.included_in_event, American Civil War
Battle of Mine Run, base.culturalevent.event.entity_involved, Confederate States of America
Lafayette McLaws, military.military_person.participated_in_conflicts, Battle of Antietam
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, American Civil War
Battle of Antietam, military.military_conflict.military_personnel_involved, George Armstrong Custer
Battle of Antietam, military.military_conflict.military_personnel_involved, Alpheus S. Williams
10th Louisiana Infantry, base.americancivilwar.military_unit.conflicts_participated_in, Battle of Antietam
James A. Walker, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Bryan Grimes
Battle of Ball's Bluff, base.culturalevent.event.entity_involved, Confederate States of America
Solomon Meredith, military.military_person.participated_in_conflicts, Battle of Antietam
William E. Starke, people.deceased_person.place_of_death, Antietam National Battlefield
Battle of Antietam, military.military_conflict.military_personnel_involved, Edward Lloyd Thomas
Henry Baxter, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Jacob Dolson Cox
Winfield S. Featherston, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, book.book_subject.works, Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War
Alpheus S. Williams, military.military_person.participated_in_conflicts, Battle of Antietam
Second Battle of Fredericksburg, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Cold Harbor, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, common.topic.notable_types, Military Conflict
William Barksdale, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, John C. Caldwell
Maryland, location.location.events, Gettysburg Campaign
William E. Starke, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, George T. Anderson
Ambrose Burnside, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Chancellorsville, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Battle of Antietam, common.topic.notable_for, g.12558rr3p
Battle of Antietam, military.military_conflict.military_personnel_involved, Lawrence O'Bryan Branch
Battle of Antietam, military.military_conflict.military_personnel_involved, Oliver O. Howard
Battle of Shepherdstown, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Joseph K. Mansfield
Battle of Antietam, military.military_conflict.military_personnel_involved, Israel B. Richardson
Battle of Antietam, military.military_conflict.military_personnel_involved, Ambrose R. Wright
Battle of Antietam, common.topic.image, Battle of Antietam
Battle of South Mountain, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Crampton's Gap, base.culturalevent.event.entity_involved, Confederate States of America
John Pelham, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Malvern Hill, base.culturalevent.event.entity_involved, Confederate States of America
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, common.topic.notable_types, Book
Battle of Antietam, military.military_conflict.combatants, m.049y38h
Antietam National Battlefield, location.location.containedby, Sharpsburg
William Lowther \"Mudwall\" Jackson, military.military_person.participated_in_conflicts, Battle of Antietam
George P. Doles, military.military_person.participated_in_conflicts, Battle of Antietam
Lawrence O'Bryan Branch, military.military_person.participated_in_conflicts, Battle of Antietam
Jubal Early, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Alexander Lawton
Battle of Antietam, military.military_conflict.military_personnel_involved, Lafayette McLaws
Maryland, location.location.events, Battle of Antietam
Battle of the Crater, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, William Harrow
Battle of Antietam, military.military_conflict.military_personnel_involved, D. Wyatt Aiken
Battle of Antietam, base.schemastaging.context_name.pronunciation, g.125_rb17b
Battle of Waynesboro, Virginia, base.culturalevent.event.entity_involved, Confederate States of America
Evander M. Law, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Charles Griffin
Second Battle of Bull Run, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, David Lang
Daniel Harvey Hill, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Hampton Roads, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Seven Pines, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Battle of Antietam, military.military_conflict.military_personnel_involved, Robert E. Rodes
Battle of Cedar Mountain, time.event.included_in_event, Northern Virginia Campaign
m.049y3bl, military.military_command.military_conflict, Battle of Antietam
William Ruffin Cox, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, George Meade
Battle of Chancellorsville, base.americancivilwar.battle.military_units_involved_in_this_conflict, Army of Northern Virginia
First Battle of Bull Run, base.culturalevent.event.entity_involved, Confederate States of America
Battle of South Mountain, time.event.included_in_event, Maryland Campaign
Battle of Antietam, military.military_conflict.military_personnel_involved, Alfred Iverson, Jr.
George Armstrong Custer, military.military_person.participated_in_conflicts, Battle of Antietam
Benjamin G. Humphreys, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Elisha F. Paxton
Antietam, book.written_work.subjects, Maryland
Battle of Fort Sanders, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Nathan Kimball
Battle of Antietam, military.military_conflict.military_personnel_involved, George Sykes
Battle of Antietam, military.military_conflict.military_personnel_involved, George P. Doles
Battle of Antietam, base.culturalevent.event.entity_involved, Robert E. Lee
Battle of Eltham's Landing, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Richard B. Garnett
Battle of Antietam, military.military_conflict.military_personnel_involved, Henry Warner Slocum
Harry T. Hays, military.military_person.participated_in_conflicts, Battle of Antietam
Jacob Dolson Cox, book.author.works_written, The Battle Of Franklin, Tennessee, November 30, 1864
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, common.topic.article, m.064zyxy
Battle of Antietam, time.event.included_in_event, Maryland Campaign
Battle of Antietam, military.military_conflict.military_personnel_involved, Thomas Drayton
Battle of Antietam, military.military_conflict.military_personnel_involved, John Newton
15th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Battle of Antietam
George B. Anderson, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Roger Atkinson Pryor
Oliver O. Howard, military.military_person.participated_in_conflicts, Battle of Antietam
D. Wyatt Aiken, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, base.americancivilwar.battle.military_units_involved_in_this_conflict, 14th Louisiana Infantry Regiment
William T. Wofford, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Port Royal, base.culturalevent.event.entity_involved, Confederate States of America
Israel B. Richardson, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of North Point, time.event.locations, Maryland
m.03z98d_, military.military_combatant_group.combatants, Confederate States of America
m.049y38h, military.military_combatant_group.conflict, Battle of Antietam
Battle of Cedar Mountain, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
Battle of New Bern, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Sailor's Creek, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Cedar Mountain, base.americancivilwar.battle.military_units_involved_in_this_conflict, 15th Louisiana Infantry Regiment
Battle of Antietam, military.military_conflict.military_personnel_involved, Solomon Meredith
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, James B. Ricketts
Battle of Antietam, military.military_conflict.military_personnel_involved, Thomas Francis Meagher
Sharpsburg, travel.travel_destination.tourist_attractions, Antietam National Battlefield
Battle of Fort Stedman, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Antietam, military.military_conflict.military_personnel_involved, Maxcy Gregg
Battle of Antietam, time.event.locations, Sharpsburg
John Newton, military.military_person.participated_in_conflicts, Battle of Antietam
Stonewall Jackson, military.military_person.participated_in_conflicts, Battle of Antietam
Nelson A. Miles, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Francis C. Barlow
Battle of Brice's Crossroads, base.culturalevent.event.entity_involved, Confederate States of America
James B. Ricketts, military.military_person.participated_in_conflicts, Battle of Antietam
John C. Caldwell, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.commanders, m.049y3bl
Charles Griffin, military.military_person.participated_in_conflicts, Battle of Antietam
David Lang, military.military_person.participated_in_conflicts, Battle of Antietam
Jubal Early, book.author.works_written, A memoir of the last year of the War for Independence in the Confederate States of America
Narrative of the War Between the States, book.written_work.subjects, United States of America
Northern Virginia Campaign, time.event.includes_event, Second Battle of Bull Run
Battle of South Mills, base.culturalevent.event.entity_involved, Confederate States of America
Battle of Waynesboro, Virginia, base.culturalevent.event.entity_involved, Union
Battle of Antietam, military.military_conflict.military_personnel_involved, John Pelham
Battle of Gettysburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 14th Louisiana Infantry Regiment
Battle of Antietam, military.military_conflict.combatants, m.049y38p
Jacob Dolson Cox, military.military_person.participated_in_conflicts, Battle of Antietam
George B. McClellan, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, William Lowther \"Mudwall\" Jackson
Antietam Creek, location.location.containedby, United States of America
Robert E. Rodes, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, Jubal Early
Battle of Antietam, military.military_conflict.military_personnel_involved, Andrew A. Humphreys
Antietam National Battlefield, base.usnationalparks.us_national_park.state, Maryland
Army of Northern Virginia, base.americancivilwar.military_unit.conflicts_participated_in, Battle of Chancellorsville
William Dorsey Pender, military.military_person.participated_in_conflicts, Battle of Antietam
Battle of Antietam, military.military_conflict.military_personnel_involved, William Barksdale
Battle of Wilmington, base.culturalevent.event.entity_involved, Confederate States of America
Daniel Butterfield, military.military_person.participated_in_conflicts, Battle of Antietam
Second Battle of Bull Run, base.americancivilwar.battle.military_units_involved_in_this_conflict, 2nd Louisiana Infantry Regiment
John Brown Gordon, military.military_person.participated_in_conflicts, Battle of Antietam
Andrew A. Humphreys, military.military_person.participated_in_conflicts, Battle of Antietam
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, History of the United States
Battle of New Bern, base.culturalevent.event.entity_involved, United States of America
Fitz John Porter, military.military_person.participated_in_conflicts, Battle of Antietam
14th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Battle of Antietam
Lucius Fairchild, military.military_person.participated_in_conflicts, Battle of Antietam
Maryland, book.book_subject.works, Antietam
Crossroads of Freedom: Antietam, The Battle that Changed the Course of the Civil War, book.written_work.subjects, United States of America
Maryland Campaign, time.event.includes_event, Battle of Antietam
Antietam Creek, location.location.partially_containedby, Maryland
Battle of Antietam, time.event.locations, Maryland
Robert Ransom, Jr., military.military_person.participated_in_conflicts, Battle of Antietam
Thomas H. Ruger, military.military_person.participated_in_conflicts, Battle of Antietam

Answer: Maryland