Terra Rubra, Maryland
E42857
Terra Rubra, Maryland is a historic estate in Frederick County best known as the birthplace of Francis Scott Key, author of the U.S. national anthem.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Terra Rubra, Maryland canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T132923 — 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: Terra Rubra, Maryland Context triple: [Francis Scott Key, placeOfBirth, Terra Rubra, Maryland]
-
A.
Frederick, Maryland
Frederick, Maryland is a historic city in western Maryland known for its vibrant downtown, Civil War heritage, and role as a regional hub for government and biomedical research.
-
B.
Calvert
Calvert is a given name most notably borne by Calvert Vaux, the 19th-century British-American architect and landscape designer who co-designed New York City's Central Park.
-
C.
Rockville, Maryland
Rockville, Maryland is a suburban city in Montgomery County just northwest of Washington, D.C., known as a major regional commercial and technology hub and home to several federal agencies.
-
D.
Lorton
Lorton is a suburban community in Fairfax County, Northern Virginia, known for its residential neighborhoods, proximity to major transportation routes, and redevelopment of the former Lorton Reformatory site.
-
E.
Calvert County, Maryland
Calvert County, Maryland is a largely suburban and rural county in southern Maryland along the western shore of the Chesapeake Bay, known for its waterfront communities, fossil-rich cliffs, and role as a bedroom community within the greater Washington, D.C. region.
- 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: Terra Rubra, Maryland Target entity description: Terra Rubra, Maryland is a historic estate in Frederick County best known as the birthplace of Francis Scott Key, author of the U.S. national anthem.
-
A.
Frederick, Maryland
Frederick, Maryland is a historic city in western Maryland known for its vibrant downtown, Civil War heritage, and role as a regional hub for government and biomedical research.
-
B.
Calvert
Calvert is a given name most notably borne by Calvert Vaux, the 19th-century British-American architect and landscape designer who co-designed New York City's Central Park.
-
C.
Rockville, Maryland
Rockville, Maryland is a suburban city in Montgomery County just northwest of Washington, D.C., known as a major regional commercial and technology hub and home to several federal agencies.
-
D.
Lorton
Lorton is a suburban community in Fairfax County, Northern Virginia, known for its residential neighborhoods, proximity to major transportation routes, and redevelopment of the former Lorton Reformatory site.
-
E.
Calvert County, Maryland
Calvert County, Maryland is a largely suburban and rural county in southern Maryland along the western shore of the Chesapeake Bay, known for its waterfront communities, fossil-rich cliffs, and role as a bedroom community within the greater Washington, D.C. region.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
birthplace
ⓘ
county ⓘ historic estate ⓘ national anthem ⓘ person ⓘ |
| author | Francis Scott Key ⓘ |
| birthplace | Terra Rubra, Maryland self-linksurface differs ⓘ |
| country |
United States of America
ⓘ
United States of America ⓘ United States of America ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| hasCulturalSignificance | associated with composition of "The Star-Spangled Banner" through Francis Scott Key ⓘ |
| hasGeographicFeature | rural landscape ⓘ |
| hasNameOrigin | Latin phrase "Terra Rubra" meaning "red earth" ⓘ |
| hasUse | farm ⓘ |
| heritageDesignation | historic site ⓘ |
| locatedIn |
Frederick County, Maryland
ⓘ
Maryland ⓘ Maryland ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInTimeZone | Eastern Time Zone ⓘ |
| notableResident | Francis Scott Key ⓘ |
| notableWork | lyrics of "The Star-Spangled Banner" ⓘ |
| occupation |
lawyer
ⓘ
poet ⓘ |
| partOf | Frederick County, Maryland ⓘ |
| significantFor | birthplace of Francis Scott Key ⓘ |
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: Terra Rubra, Maryland Description of subject: Terra Rubra, Maryland is a historic estate in Frederick County best known as the birthplace of Francis Scott Key, author of the U.S. national anthem.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Francis Scott Key