Battle of South Mountain
E177339
The Battle of South Mountain was an American Civil War engagement in September 1862 in which Union forces fought through key mountain passes in Maryland, setting the stage for the subsequent Battle of Antietam.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Battle of South Mountain canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T1165217 — 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: Battle of South Mountain Context triple: [Battle of Antietam, precededBy, Battle of South Mountain]
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A.
Battle of Antietam
The Battle of Antietam was a pivotal 1862 clash in the American Civil War, known as the bloodiest single day in U.S. military history and a turning point that enabled Abraham Lincoln to issue the Emancipation Proclamation.
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B.
Seven Days Battles
The Seven Days Battles were a series of American Civil War engagements in 1862 near Richmond, Virginia, in which Confederate forces under Robert E. Lee halted the Union Army’s Peninsula Campaign.
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C.
Second Battle of Winchester
The Second Battle of Winchester was a major Confederate victory in June 1863 during the American Civil War that opened the Shenandoah Valley for Robert E. Lee’s army and set the stage for the Gettysburg Campaign.
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D.
Battle of Monocacy
The Battle of Monocacy was an 1864 American Civil War engagement in Maryland in which Union forces delayed a Confederate advance toward Washington, D.C., earning it the nickname "The Battle That Saved Washington."
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E.
Battle of Chickamauga
The Battle of Chickamauga was a major Confederate victory in the American Civil War, fought in September 1863 in northwestern Georgia and known as one of the war’s bloodiest engagements.
- 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: Battle of South Mountain Target entity description: The Battle of South Mountain was an American Civil War engagement in September 1862 in which Union forces fought through key mountain passes in Maryland, setting the stage for the subsequent Battle of Antietam.
-
A.
Battle of Antietam
The Battle of Antietam was a pivotal 1862 clash in the American Civil War, known as the bloodiest single day in U.S. military history and a turning point that enabled Abraham Lincoln to issue the Emancipation Proclamation.
-
B.
Seven Days Battles
The Seven Days Battles were a series of American Civil War engagements in 1862 near Richmond, Virginia, in which Confederate forces under Robert E. Lee halted the Union Army’s Peninsula Campaign.
-
C.
Second Battle of Winchester
The Second Battle of Winchester was a major Confederate victory in June 1863 during the American Civil War that opened the Shenandoah Valley for Robert E. Lee’s army and set the stage for the Gettysburg Campaign.
-
D.
Battle of Monocacy
The Battle of Monocacy was an 1864 American Civil War engagement in Maryland in which Union forces delayed a Confederate advance toward Washington, D.C., earning it the nickname "The Battle That Saved Washington."
-
E.
Battle of Chickamauga
The Battle of Chickamauga was a major Confederate victory in the American Civil War, fought in September 1863 in northwestern Georgia and known as one of the war’s bloodiest engagements.
- F. None of above. chosen
Statements (49)
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: Battle of South Mountain Description of subject: The Battle of South Mountain was an American Civil War engagement in September 1862 in which Union forces fought through key mountain passes in Maryland, setting the stage for the subsequent Battle of Antietam.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.