Petersburg fortifications
E830596
The Petersburg fortifications were an extensive network of Confederate defensive earthworks and trenches around Petersburg, Virginia, that played a central role in the prolonged siege operations of the American Civil War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Petersburg fortifications canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9940179 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Petersburg fortifications Context triple: [Battle of Lewis’s Farm, associatedWith, Petersburg fortifications]
-
A.
Fort Ward
Fort Ward is a historic waterfront neighborhood and former military installation on Bainbridge Island in Washington State.
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B.
Fort Saint-Nicolas
Fort Saint-Nicolas is a historic 17th-century military fortress in Marseille, France, built to protect the city and its harbor and now recognized as a significant cultural monument.
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C.
Fort Macon
Fort Macon is a 19th-century coastal defense fortification in North Carolina, built as part of the United States’ Third System of seacoast defenses and now preserved as a state park and historic site.
-
D.
Old Point Comfort
Old Point Comfort is a historic strategic promontory at the mouth of Hampton Roads in southeastern Virginia, long used as a coastal defense site and navigational landmark.
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E.
Fort St. Philip
Fort St. Philip is a historic coastal fortification in Louisiana that played a key defensive role in multiple American conflicts, including the War of 1812 and the Civil War.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Petersburg fortifications Target entity description: The Petersburg fortifications were an extensive network of Confederate defensive earthworks and trenches around Petersburg, Virginia, that played a central role in the prolonged siege operations of the American Civil War.
-
A.
Fort Ward
Fort Ward is a historic waterfront neighborhood and former military installation on Bainbridge Island in Washington State.
-
B.
Fort Saint-Nicolas
Fort Saint-Nicolas is a historic 17th-century military fortress in Marseille, France, built to protect the city and its harbor and now recognized as a significant cultural monument.
-
C.
Fort Macon
Fort Macon is a 19th-century coastal defense fortification in North Carolina, built as part of the United States’ Third System of seacoast defenses and now preserved as a state park and historic site.
-
D.
Old Point Comfort
Old Point Comfort is a historic strategic promontory at the mouth of Hampton Roads in southeastern Virginia, long used as a coastal defense site and navigational landmark.
-
E.
Fort St. Philip
Fort St. Philip was a strategically vital British-held fortress on the island of Menorca that played a central role in Mediterranean naval conflicts, including the Battle of Minorca in 1756.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Civil War battlefield fortifications
ⓘ
military fortification system ⓘ |
| afterEvent |
evacuation of Richmond
ⓘ
fall of Petersburg ⓘ |
| associatedWith |
Ambrose Burnside
NERFINISHED
ⓘ
Battle of the Crater NERFINISHED ⓘ Robert E. Lee NERFINISHED ⓘ Third Battle of Petersburg NERFINISHED ⓘ Ulysses S. Grant NERFINISHED ⓘ |
| conflict | American Civil War ⓘ |
| constructionMaterial |
earth
ⓘ
timber ⓘ |
| constructionMethod | field fortifications ⓘ |
| controlledBy | Confederate States Army NERFINISHED ⓘ |
| country | Confederate States of America NERFINISHED ⓘ |
| currentStatus | partially preserved in Petersburg National Battlefield ⓘ |
| endTime | 1865-04 ⓘ |
| hasPart |
Dimmock Line
NERFINISHED
ⓘ
Fort Gregg NERFINISHED ⓘ Fort Mahone NERFINISHED ⓘ artillery batteries ⓘ earthworks ⓘ fortified lines ⓘ inner defensive lines around Petersburg ⓘ outer defensive lines around Petersburg ⓘ redans ⓘ redoubts ⓘ rifle pits ⓘ trenches ⓘ |
| heritageDesignation | United States National Battlefield Park NERFINISHED ⓘ |
| inspiredBy | contemporary European siege tactics ⓘ |
| location | Petersburg, Virginia NERFINISHED ⓘ |
| notableFor | lengthy trench warfare ⓘ |
| opposedBy |
Army of the James
NERFINISHED
ⓘ
Army of the Potomac NERFINISHED ⓘ United States Army NERFINISHED ⓘ |
| partOf | Siege of Petersburg NERFINISHED ⓘ |
| protects |
Petersburg railroad junctions
ⓘ
supply lines to Richmond ⓘ |
| result | breached by Union forces in April 1865 ⓘ |
| startTime | 1864-06 ⓘ |
| strategicImportance | defense of Richmond, Virginia ⓘ |
| timePeriod |
1864
ⓘ
1865 ⓘ |
| usedBy |
Army of Northern Virginia
NERFINISHED
ⓘ
Confederate defenders of Petersburg NERFINISHED ⓘ |
| usedFor |
prolonged defensive warfare
ⓘ
siege operations ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Petersburg fortifications Description of subject: The Petersburg fortifications were an extensive network of Confederate defensive earthworks and trenches around Petersburg, Virginia, that played a central role in the prolonged siege operations of the American Civil War.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.