user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Who left government office before Mar 11, 1877 and also fought at the Battle of Vicksburg? 
Knowledge Triplets: John S. Bowen, military.military_person.participated_in_conflicts, Siege of Vicksburg
Ulysses S. Grant, government.political_appointer.appointees, m.07hvqjr
Henry Halleck, military.military_person.participated_in_conflicts, American Civil War
An Honorable Defeat: The Last Days of the Confederate Government, book.written_work.subjects, Jefferson Davis
James B. McPherson, common.topic.notable_for, g.1259sb5xf
Vicksburg, location.location.events, Battle of Grand Gulf
m.0gmkgpk, military.casualties.combatant, Confederate States of America
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Atlanta Campaign
Battle of Chancellorsville, military.military_conflict.military_personnel_involved, Robert E. Lee
James B. McPherson, military.military_person.service, m.04yv_v3
American Civil War, base.culturalevent.event.entity_involved, Robert E. Lee
Jefferson Davis, government.politician.government_positions_held, m.09n5nyx
Siege of Vicksburg, common.topic.image, Battle of Vicksburg, Kurz and Allison
Vicksburg, location.location.events, Battle of Chickasaw Bayou
26th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
James B. McPherson, military.military_person.service, m.04hwd71
Fought in this battle, rdf-schema#range, Military Conflict
22nd Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
Ralph Pomeroy Buckland, military.military_person.participated_in_conflicts, Siege of Vicksburg
Battle of Resaca, base.culturalevent.event.entity_involved, Joseph E. Johnston
William D. Turner, common.topic.notable_for, g.1yh9t12d5
William F. Draper, government.politician.government_positions_held, m.0wlt8t1
John C. Pemberton, common.topic.image, John C. Pemberton
Ulysses S. Grant, base.kwebbase.kwtopic.has_sentences, He distinguished himself at the battle of Chatulpec on 13th September 1847, earning brevet commissions as first lieutenant and captain.
Ralph Pomeroy Buckland, government.politician.party, m.0whttkd
James B. McPherson, common.topic.article, m.02fl29
m.09n5nyx, government.government_position_held.office_holder, Jefferson Davis
Battle of Fort Henry, base.culturalevent.event.entity_involved, Ulysses S. Grant
Battle of Chancellorsville, military.military_conflict.military_personnel_involved, Seth Barton
m.049ylkz, military.military_command.military_commander, Joseph E. Johnston
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Atlanta
John S. Bowen, common.topic.image, GenJohnBowen
American Civil War, base.culturalevent.event.entity_involved, Henry Halleck
Carter L. Stevenson, military.military_person.participated_in_conflicts, Battle of Lookout Mountain
Siege of Vicksburg, common.topic.notable_types, Military Conflict
Battle of Grand Gulf, time.event.included_in_event, Grant's Operations Against Vicksburg
Battle of Champion Hill, base.culturalevent.event.entity_involved, Ulysses S. Grant
Ulysses S. Grant, military.military_person.participated_in_conflicts, Siege of Petersburg
John C. Pemberton, military.military_person.service, m.08cqtg6
Ulysses S. Grant, military.military_person.participated_in_conflicts, Overland Campaign
Ulysses S. Grant, government.political_appointer.appointees, m.04kqjx6
m.04fvcs7, military.military_combatant_group.conflict, Siege of Vicksburg
Siege of Vicksburg, military.military_conflict.military_personnel_involved, David Farragut
Battle of Arkansas Post, base.culturalevent.event.entity_involved, John Alexander McClernand
Battle of Fort Henry, base.culturalevent.event.entity_involved, Confederate States of America
Jefferson Davis, book.book_subject.works, An Honorable Defeat: The Last Days of the Confederate Government
Battle of the Wilderness, base.culturalevent.event.entity_involved, Ulysses S. Grant
Ulysses S. Grant, government.political_appointer.appointees, m.04tn7rw
John Alexander McClernand, military.military_person.participated_in_conflicts, Battle of Arkansas Post
Battle of Fort Donelson, military.military_conflict.military_personnel_involved, Ulysses S. Grant
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 27th Louisiana Infantry Regiment
Siege of Vicksburg, military.military_conflict.military_personnel_involved, James B. McPherson
m.09tbqb8, government.government_position_held.appointed_by, Ulysses S. Grant
Battle of Shiloh, base.culturalevent.event.entity_involved, Ulysses S. Grant
Battle of Big Black River Bridge, base.culturalevent.event.entity_involved, John Alexander McClernand
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 17th Louisiana Infantry Regiment
Siege of Vicksburg, military.military_conflict.commanders, m.049y2m5
Joseph E. Johnston, military.military_person.participated_in_conflicts, Mexican–American War
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Peter Joseph Osterhaus
Battle of Helena, time.event.included_in_event, Grant's Operations Against Vicksburg
Peter Joseph Osterhaus, common.topic.notable_for, g.125b5lrr3
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, American Civil War
Jefferson Davis, government.politician.government_positions_held, m.09n5n_6
Ulysses S. Grant, government.political_appointer.appointees, m.09rg1lp
Carter L. Stevenson, common.topic.image, CLStevenson
Vicksburg, location.citytown.postal_codes, 39183
James B. McPherson, common.topic.image, James B. McPherson
Grant's Operations Against Vicksburg, common.topic.notable_types, Military Conflict
Battle of Atlanta, military.military_conflict.military_personnel_involved, James B. McPherson
Ulysses S. Grant, base.kwebbase.kwtopic.has_sentences, In January 1862, Grant received permission from General Henry Wager Halleck to begin an offensive campaign.
William D. Turner, government.politician.government_positions_held, m.0z8pjt2
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Helena
Ulysses S. Grant, government.politician.election_campaigns, Ulysses S. Grant Presidential Campaign, 1868
George B. McClellan, military.military_person.participated_in_conflicts, Mexican–American War
Battle of Raymond, base.culturalevent.event.entity_involved, James B. McPherson
William D. Turner, military.military_person.participated_in_conflicts, Siege of Vicksburg
Battle of Jackson, Mississippi, time.event.included_in_event, Grant's Operations Against Vicksburg
Vicksburg Campaign, time.event.includes_event, Grant's Operations Against Vicksburg
m.09s797y, government.government_position_held.appointed_by, Ulysses S. Grant
Vicksburg, location.location.containedby, United States of America
David Farragut, military.military_person.participated_in_conflicts, American Civil War
m.07hvqjr, government.government_position_held.appointed_by, Ulysses S. Grant
Battle of the Wilderness, base.culturalevent.event.entity_involved, Robert E. Lee
Robert E. Lee, military.military_person.participated_in_conflicts, American Civil War
William D. Turner, military.military_person.service, m.0z8pndg
Vicksburg Campaign, military.military_conflict.military_personnel_involved, Joseph E. Johnston
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Shiloh
Grant's Operations Against Vicksburg, base.americancivilwar.campaign.theater, Western Theater of the American Civil War
Battle of Vicksburg, Kurz and Allison, common.image.size, m.02c7z_m
Henry Casey, military.military_person.participated_in_conflicts, Siege of Vicksburg
David Farragut, common.topic.article, m.0pzfr
Siege of Vicksburg, base.culturalevent.event.entity_involved, Ulysses S. Grant
Henry Dow, military.military_person.participated_in_conflicts, Siege of Vicksburg
John S. Bowen, military.military_person.participated_in_conflicts, American Civil War
Siege of Vicksburg, base.culturalevent.event.entity_involved, Ulysses S. Grant
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Shiloh
John S. Bowen, military.military_person.participated_in_conflicts, Battle of Port Gibson
Siege of Vicksburg, military.military_conflict.military_personnel_involved, William D. Turner
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Ralph Pomeroy Buckland
Carter L. Stevenson, military.military_person.participated_in_conflicts, American Civil War
Ulysses S. Grant, base.kwebbase.kwtopic.has_sentences, In 1877 Grant finally left office and the family went on a two-year round the world tour.
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Jackson, Mississippi
Vicksburg, book.written_work.original_language, English Language
m.049y3bl, military.military_command.military_commander, Robert E. Lee
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Monterrey
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 3rd Louisiana Infantry Regiment
m.049y2m5, military.military_command.military_commander, John C. Pemberton
Henry Wilson, military.military_person.participated_in_conflicts, American Civil War
Ralph Pomeroy Buckland, military.military_person.participated_in_conflicts, Battle of Shiloh
m.04kqjx6, government.government_position_held.appointed_by, Ulysses S. Grant
m.04hsssl, people.place_lived.person, John Alexander McClernand
Siege of Vicksburg, base.schemastaging.context_name.pronunciation, g.125_lwv14
Jefferson Davis, government.politician.government_positions_held, m.09n5nzq
m.049y2m5, military.military_command.military_conflict, Siege of Vicksburg
John C. Pemberton, people.person.nationality, Confederate States of America
Peter Joseph Osterhaus, common.topic.article, m.03grvlq
m.049y2pc, military.military_combatant_group.conflict, Siege of Vicksburg
m.04hgzp_, people.place_lived.person, Peter Joseph Osterhaus
Battle of Champion Hill, time.event.included_in_event, Grant's Operations Against Vicksburg
3rd Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
m.049y2lz, military.military_command.military_conflict, Siege of Vicksburg
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Battle of Pea Ridge
Siege of Vicksburg, military.military_conflict.combatants, m.049y2pc
Robert E. Lee, military.military_person.participated_in_conflicts, Battle of Chancellorsville
Siege of Vicksburg, military.military_conflict.commanders, m.049y2lz
P. G. T. Beauregard, military.military_person.participated_in_conflicts, Battle of Shiloh
John Alexander McClernand, common.topic.article, m.059w59
Henry Casey, common.topic.notable_for, g.1ylqcmhw3
Battle of Goodrich's Landing, time.event.included_in_event, Grant's Operations Against Vicksburg
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Henry Casey
Warren County, location.us_county.hud_county_place, Vicksburg
Henry Wilson, government.us_vice_president.to_president, Ulysses S. Grant
m.04yz15j, military.military_command.military_commander, James B. McPherson
John Alexander McClernand, military.military_person.participated_in_conflicts, American Civil War
Ulysses S. Grant, government.us_president.vice_president, Schuyler Colfax
17th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Ulysses S. Grant
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Snyder's Bluff
Battle of Arkansas Post, military.military_conflict.military_personnel_involved, John Alexander McClernand
War of 1812, base.culturalevent.event.entity_involved, Winfield Scott
Vicksburg, location.location.containedby, Mississippi
m.0c058rz, military.military_command.military_commander, Robert E. Lee
m.09n5nzq, government.government_position_held.jurisdiction_of_office, Confederate States of America
Jefferson Davis, military.military_person.participated_in_conflicts, Battle of Monterrey
Battle of Port Gibson, time.event.included_in_event, Grant's Operations Against Vicksburg
m.04kqjxb, government.government_position_held.appointed_by, Ulysses S. Grant
William F. Draper, military.military_person.participated_in_conflicts, Battle of the Wilderness
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Kennesaw Mountain
Joseph E. Johnston, military.military_person.participated_in_conflicts, Atlanta Campaign
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Fort Donelson
William D. Turner, government.politician.party, m.0z8pk45
Ulysses S. Grant, government.political_appointer.appointees, m.04kqjx2
Ulysses S. Grant, government.political_appointer.appointees, m.09s797y
Schuyler Colfax, government.us_vice_president.to_president, Ulysses S. Grant
m.049y372, military.military_command.military_commander, Robert E. Lee
William F. Draper, military.military_person.participated_in_conflicts, Battle of Globe Tavern
m.0z8pjt2, government.government_position_held.office_holder, William D. Turner
Siege of Vicksburg, military.military_conflict.military_personnel_involved, William F. Draper
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Chapultepec
Vicksburg, location.citytown.postal_codes, 39180
m.04yxhb2, military.military_command.military_commander, John C. Pemberton
Carter L. Stevenson, military.military_person.participated_in_conflicts, Battle of Nashville
John C. Pemberton, common.topic.article, m.02_qh6
Battle of Atlanta, base.culturalevent.event.entity_involved, James B. McPherson
Grant's Operations Against Vicksburg, common.topic.notable_for, g.125b421pj
John C. Pemberton, military.military_person.service, m.08cqtg1
Ulysses S. Grant, government.political_appointer.appointees, m.09tbqb8
An Honorable Defeat: The Last Days of the Confederate Government, book.written_work.subjects, Confederate States of America
James B. McPherson, military.military_person.participated_in_conflicts, American Civil War
Battle of Chapultepec, military.military_conflict.military_personnel_involved, Ulysses S. Grant
Ralph Pomeroy Buckland, government.politician.government_positions_held, m.0wk5d9t
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Seth Barton
Joseph E. Johnston, military.military_person.participated_in_conflicts, American Civil War
Siege of Vicksburg, base.culturalevent.event.entity_involved, Union
Battle of Shiloh, military.military_conflict.military_personnel_involved, Ulysses S. Grant
m.0jvvyr2, location.administrative_division_capital_relationship.capital, Vicksburg
John Alexander McClernand, government.politician.party, m.04d66q4
Warren County, location.location.events, Siege of Vicksburg
Battle of Jackson, Mississippi, base.culturalevent.event.entity_involved, Joseph E. Johnston
Mississippi, location.location.events, Siege of Vicksburg
m.04tn7rr, government.government_position_held.appointed_by, Ulysses S. Grant
Carter L. Stevenson, military.military_person.participated_in_conflicts, Siege of Vicksburg
Warren County, location.location.contains, Vicksburg
Grant's Operations Against Vicksburg, time.event.included_in_event, Vicksburg Campaign
27th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
American Civil War, base.culturalevent.event.entity_involved, Joseph E. Johnston
Western Theater of the American Civil War, time.event.includes_event, Vicksburg Campaign
m.049y352, military.military_command.military_commander, Robert E. Lee
John Alexander McClernand, common.topic.image, John Alexander McClernand
Ulysses S. Grant, government.political_appointer.appointees, m.05n572x
Siege of Vicksburg, base.culturalevent.event.entity_involved, United States of America
William F. Draper, common.topic.article, m.02rj_fv
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Molino del Rey
m.04kqjxg, government.government_position_held.appointed_by, Ulysses S. Grant
Ralph Pomeroy Buckland, government.politician.government_positions_held, m.0b_cxz6
Battle of Milliken's Bend, time.event.included_in_event, Grant's Operations Against Vicksburg
Battle of Chancellorsville, time.event.locations, Virginia
David Farragut, military.military_person.participated_in_conflicts, Siege of Vicksburg
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 23rd Louisiana Infantry Regiment
Ralph Pomeroy Buckland, government.politician.party, m.0pb96gc
Peter Joseph Osterhaus, military.military_person.service, m.08cvct8
Robert E. Lee, military.military_commander.military_commands, m.0c058rz
Battle of Fort Donelson, base.culturalevent.event.entity_involved, Ulysses S. Grant
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Palo Alto
m.09n5n_6, government.government_position_held.office_holder, Jefferson Davis
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Champion Hill
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Big Black River Bridge
Battle of Snyder's Bluff, time.event.included_in_event, Grant's Operations Against Vicksburg
Vicksburg, location.hud_county_place.place, Vicksburg
Robert E. Lee, base.kwebbase.kwtopic.connections_from, robert edward lee fought ulysses simpson grant
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 26th Louisiana Infantry Regiment
Battle of Big Black River Bridge, time.event.included_in_event, Grant's Operations Against Vicksburg
Ulysses S. Grant, government.politician.party, m.03gjg83
Vicksburg, travel.travel_destination.tourist_attractions, Vicksburg National Military Park
23rd Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
Ulysses S. Grant, government.political_appointer.appointees, m.04kqjxg
Seth Barton, military.military_person.participated_in_conflicts, Siege of Vicksburg
Siege of Vicksburg, military.military_conflict.combatants, m.04fvcs7
m.03fx88m, government.government_position_held.office_holder, Ulysses S. Grant
Siege of Vicksburg, common.topic.notable_for, g.125fntmgj
Joseph E. Johnston, military.military_person.participated_in_conflicts, Battle of Chapultepec
m.04yxf4y, military.military_command.military_commander, Robert E. Lee
Siege of Vicksburg, military.military_conflict.military_personnel_involved, John S. Bowen
Grant's Operations Against Vicksburg, time.event.includes_event, Siege of Vicksburg
John Alexander McClernand, military.military_person.participated_in_conflicts, Battle of Fort Donelson
m.09n5nzq, government.government_position_held.office_holder, Jefferson Davis
Vicksburg, location.location.containedby, Warren County
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Raymond
Ralph Pomeroy Buckland, military.military_person.participated_in_conflicts, American Civil War
Vicksburg, location.capital_of_administrative_division.capital_of, m.0jvvyr2
Henry Halleck, military.military_person.participated_in_conflicts, Mexican–American War
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 22nd Louisiana Infantry Regiment
George B. McClellan, military.military_person.participated_in_conflicts, American Civil War
Confederate States of America, book.book_subject.works, An Honorable Defeat: The Last Days of the Confederate Government
Carter L. Stevenson, common.topic.article, m.0dvc35
Siege of Vicksburg, time.event.locations, Warren County
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Battle of Lookout Mountain
Vicksburg, book.written_work.subjects, Mississippi
William F. Draper, military.military_person.participated_in_conflicts, Siege of Petersburg
William F. Draper, military.military_person.participated_in_conflicts, American Civil War
Warren County, location.location.contains, Vicksburg National Military Park
Ulysses S. Grant, base.kwebbase.kwtopic.has_sentences, On April 11, 1854, Grant resigned from the army.
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Grand Gulf
m.0dl56tp, military.military_command.military_commander, Robert E. Lee
Vicksburg, location.hud_county_place.county, Warren County
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Carter L. Stevenson
m.049yl2q, military.military_command.military_commander, James B. McPherson
Robert E. Lee, people.person.nationality, Confederate States of America
Seth Barton, military.military_person.participated_in_conflicts, Battle of Chancellorsville
m.0b_cxz6, government.government_position_held.office_holder, Ralph Pomeroy Buckland
31st Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
John C. Pemberton, common.topic.notable_for, g.1255x3lbr
David Farragut, common.topic.notable_for, g.1255_srjt
Battle of Vicksburg, Kurz and Allison, common.image.appears_in_topic_gallery, Siege of Vicksburg
Peter Joseph Osterhaus, people.deceased_person.place_of_death, Duisburg
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 29th Louisiana Infantry Regiment
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Resaca
Battle of Jackson, Mississippi, base.culturalevent.event.entity_involved, Ulysses S. Grant
Mississippi, travel.travel_destination.tourist_attractions, Vicksburg National Military Park
Siege of Vicksburg, time.event.locations, Mississippi
Vicksburg Campaign, time.event.included_in_event, Western Theater of the American Civil War
John S. Bowen, common.topic.notable_for, g.125dfb9sq
Vicksburg, location.location.contains, Vicksburg National Military Park
William F. Draper, military.military_person.participated_in_conflicts, Siege of Vicksburg
m.04tn7rw, government.government_position_held.appointed_by, Ulysses S. Grant
m.09rg1lp, government.government_position_held.appointed_by, Ulysses S. Grant
Siege of Vicksburg, base.americancivilwar.battle.military_units_involved_in_this_conflict, 31st Louisiana Infantry Regiment
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Fort Donelson
John Alexander McClernand, military.military_person.participated_in_conflicts, Battle of Shiloh
Battle of Fort Henry, military.military_conflict.military_personnel_involved, James B. McPherson
American Civil War, base.culturalevent.event.entity_involved, Winfield Scott
m.0wlt8t1, government.government_position_held.office_holder, William F. Draper
Ulysses S. Grant, government.politician.government_positions_held, m.03fx88m
William F. Draper, government.politician.party, m.0bw_zcj
Vicksburg Campaign, common.topic.notable_types, Military Conflict
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Milliken's Bend
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Siege of Vicksburg
m.04yw837, military.military_command.military_commander, James B. McPherson
Siege of Vicksburg, base.culturalevent.event.entity_involved, Confederate States of America
Ralph Pomeroy Buckland, common.topic.article, m.02rm2sn
m.0gmkfgp, military.casualties.combatant, Confederate States of America
Siege of Vicksburg, time.event.included_in_event, American Civil War
James B. McPherson, military.military_person.participated_in_conflicts, Battle of Fort Henry
John C. Pemberton, common.topic.image, JCPembertonBLY
Siege of Vicksburg, time.event.included_in_event, Grant's Operations Against Vicksburg
Battle of Raymond, time.event.included_in_event, Grant's Operations Against Vicksburg
Ulysses S. Grant, military.military_person.participated_in_conflicts, Battle of Resaca de la Palma
Ulysses S. Grant, government.political_appointer.appointees, m.04kqjxb
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Port Gibson
m.04yywth, military.military_command.military_commander, John C. Pemberton
Battle of Grand Gulf, time.event.locations, Vicksburg
David Farragut, military.military_person.participated_in_conflicts, War of 1812
Siege of Vicksburg, military.military_conflict.military_personnel_involved, Henry Dow
Battle of Chancellorsville, base.culturalevent.event.entity_involved, Robert E. Lee
Henry Dow, common.topic.notable_for, g.1yp3b0l4k
James B. McPherson, military.military_person.participated_in_conflicts, Siege of Vicksburg
Grant's Operations Against Vicksburg, time.event.includes_event, Battle of Goodrich's Landing
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Battle of Big Black River Bridge
John S. Bowen, military.military_person.participated_in_conflicts, Battle of Shiloh
John S. Bowen, common.topic.article, m.0dxwzs
John Alexander McClernand, people.person.places_lived, m.04hsssl
Western Theater of the American Civil War, base.americancivilwar.theater.campaigns, Grant's Operations Against Vicksburg
Ulysses S. Grant, base.kwebbase.kwtopic.connections_to, robert edward lee fought ulysses simpson grant
m.05n572x, government.government_position_held.appointed_by, Ulysses S. Grant
Siege of Vicksburg, common.topic.article, m.01hf7m
Warren County, location.us_county.county_seat, Vicksburg
Battle of Port Gibson, base.culturalevent.event.entity_involved, Ulysses S. Grant
William D. Turner, military.military_person.participated_in_conflicts, American Civil War
m.04kqjx2, government.government_position_held.appointed_by, Ulysses S. Grant
Ulysses S. Grant, government.us_president.vice_president, Henry Wilson
Vicksburg, location.location.time_zones, Central Time Zone
29th Louisiana Infantry Regiment, base.americancivilwar.military_unit.conflicts_participated_in, Siege of Vicksburg
John S. Bowen, military.military_person.participated_in_conflicts, Battle of Big Black River Bridge
Ulysses S. Grant, military.military_person.participated_in_conflicts, Siege of Vicksburg
Joseph E. Johnston, military.military_person.participated_in_conflicts, Vicksburg Campaign
m.0wk5d9t, government.government_position_held.office_holder, Ralph Pomeroy Buckland
Siege of Vicksburg, base.culturalevent.event.entity_involved, John C. Pemberton
Mississippi, book.book_subject.works, Vicksburg
Battle of Fort Donelson, military.military_conflict.military_personnel_involved, John Alexander McClernand
David Farragut, military.military_person.service, m.04hxb1t
Battle of Chickasaw Bayou, time.event.locations, Vicksburg
William F. Draper, common.topic.notable_for, g.12594n0fl
American Civil War, base.culturalevent.event.entity_involved, George B. McClellan
Battle of Chancellorsville, time.event.included_in_event, American Civil War
Peter Joseph Osterhaus, military.military_person.participated_in_conflicts, Battle of Wilson's Creek
Siege of Vicksburg, military.military_conflict.military_personnel_involved, John Alexander McClernand
Vicksburg, book.written_work.subjects, United States of America
John Alexander McClernand, common.topic.notable_for, g.125d3_8ty
John Alexander McClernand, military.military_person.participated_in_conflicts, Siege of Vicksburg
Ulysses S. Grant, government.political_appointer.appointees, m.04tn7rr

Answer: Ulysses S. Grant