Mount Harmon Plantation
E924514
Mount Harmon Plantation is a historic 18th-century tobacco plantation and manor house in Cecil County, Maryland, preserved today as a heritage site and nature preserve.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mount Harmon Plantation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11421365 — 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: Mount Harmon Plantation Context triple: [Cecil County, Maryland, hasHistoricSite, Mount Harmon Plantation]
-
A.
Montpelier plantation
Montpelier plantation was the Virginia estate of James and Dolley Madison, best known as the lifelong home of the fourth U.S. president and a major site of early American political history and slavery.
-
B.
Kingsley Plantation
Kingsley Plantation is a historic former cotton and sea island cotton plantation on Fort George Island near Jacksonville, Florida, notable for its preserved slave quarters and association with planter Zephaniah Kingsley.
-
C.
Lovejoy Plantation
Lovejoy Plantation is a historic Southern estate in Georgia best known as the longtime home of political figure Betty Talmadge and for its ties to the state’s mid-20th-century political and social life.
-
D.
Berry Hill Plantation
Berry Hill Plantation is a historic antebellum estate in Halifax County, Virginia, known for its grand Greek Revival mansion and its role in the region’s plantation-era history.
-
E.
Cawsons Plantation
Cawsons Plantation is a historic estate located in Prince George County, Virginia, known for its ties to the region’s early plantation-era history.
- 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: Mount Harmon Plantation Target entity description: Mount Harmon Plantation is a historic 18th-century tobacco plantation and manor house in Cecil County, Maryland, preserved today as a heritage site and nature preserve.
-
A.
Montpelier plantation
Montpelier plantation was the Virginia estate of James and Dolley Madison, best known as the lifelong home of the fourth U.S. president and a major site of early American political history and slavery.
-
B.
Kingsley Plantation
Kingsley Plantation is a historic former cotton and sea island cotton plantation on Fort George Island near Jacksonville, Florida, notable for its preserved slave quarters and association with planter Zephaniah Kingsley.
-
C.
Lovejoy Plantation
Lovejoy Plantation is a historic Southern estate in Georgia best known as the longtime home of political figure Betty Talmadge and for its ties to the state’s mid-20th-century political and social life.
-
D.
Berry Hill Plantation
Berry Hill Plantation is a historic antebellum estate in Halifax County, Virginia, known for its grand Greek Revival mansion and its role in the region’s plantation-era history.
-
E.
Cawsons Plantation
Cawsons Plantation is a historic estate located in Prince George County, Virginia, known for its ties to the region’s early plantation-era history.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
heritage site
ⓘ
historic house ⓘ historic plantation ⓘ nature preserve ⓘ |
| architecturalStyle | Georgian architecture ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Cecil County, Maryland NERFINISHED ⓘ |
| currentUse |
heritage site
ⓘ
nature preserve ⓘ |
| establishedInCentury | 18th century ⓘ |
| hasActivity |
birdwatching
ⓘ
heritage tourism ⓘ hiking ⓘ |
| hasBuilding | Mount Harmon manor house NERFINISHED ⓘ |
| hasConservationRole | protection of local flora and fauna ⓘ |
| hasEcosystem |
forests
ⓘ
meadows ⓘ wetlands ⓘ |
| hasEducationalRole |
interpretation of colonial tobacco economy
ⓘ
interpretation of plantation history ⓘ |
| hasFeature |
historic manor house
ⓘ
plantation outbuildings ⓘ waterfront views ⓘ |
| hasFunction |
environmental conservation
ⓘ
historic interpretation ⓘ |
| locatedIn |
Cecil County, Maryland
NERFINISHED
ⓘ
Eastern Shore of Maryland NERFINISHED ⓘ |
| locatedNear |
Chesapeake Bay
NERFINISHED
ⓘ
Sassafras River NERFINISHED ⓘ |
| offers |
educational programs
ⓘ
guided tours ⓘ walking trails ⓘ |
| openToPublic | true ⓘ |
| preserves | colonial-era landscape ⓘ |
| primaryCropHistorically | tobacco GENERATED ⓘ |
| region |
Mid-Atlantic states
ⓘ
surface form:
Mid-Atlantic United States
|
| significance |
example of 18th-century Chesapeake tobacco plantation
ⓘ
regional cultural heritage site ⓘ wildlife habitat ⓘ |
| state | Maryland ⓘ |
| usedAs |
manor house
ⓘ
tobacco plantation ⓘ |
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: Mount Harmon Plantation Description of subject: Mount Harmon Plantation is a historic 18th-century tobacco plantation and manor house in Cecil County, Maryland, preserved today as a heritage site and nature preserve.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.