Londonderry Township, Dauphin County, Pennsylvania
E807776
Londonderry Township, Dauphin County, Pennsylvania is a municipality along the Susquehanna River best known as the site of the Three Mile Island nuclear power facility and the 1979 nuclear accident.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Londonderry Township, Dauphin County, Pennsylvania canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9560140 — 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: Londonderry Township, Dauphin County, Pennsylvania Context triple: [Three Mile Island Nuclear Generating Station, locatedIn, Londonderry Township, Dauphin County, Pennsylvania]
-
A.
South Londonderry Township, Pennsylvania
South Londonderry Township, Pennsylvania is a primarily rural residential community in Lebanon County known for its small-town character and proximity to the greater Harrisburg–Lebanon–Lancaster region.
-
B.
Newtown Township, Delaware County, Pennsylvania
Newtown Township, Delaware County, Pennsylvania is a suburban municipality west of Philadelphia known for its residential communities, historic sites, and part of the Main Line region.
-
C.
Ulster Township, Bradford County, Pennsylvania
Ulster Township is a small rural municipality in northeastern Pennsylvania, situated along the Susquehanna River in Bradford County.
-
D.
Durham Township, Bucks County, Pennsylvania
Durham Township, Bucks County, Pennsylvania is a small rural municipality in the northeastern part of the state, historically known for its early iron industry and colonial-era Durham Furnace.
-
E.
Durham Township, Pennsylvania
Durham Township, Pennsylvania is a small rural municipality in Bucks County known historically for its early iron-making industry centered around the Durham Furnace.
- 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: Londonderry Township, Dauphin County, Pennsylvania Target entity description: Londonderry Township, Dauphin County, Pennsylvania is a municipality along the Susquehanna River best known as the site of the Three Mile Island nuclear power facility and the 1979 nuclear accident.
-
A.
South Londonderry Township, Pennsylvania
South Londonderry Township, Pennsylvania is a primarily rural residential community in Lebanon County known for its small-town character and proximity to the greater Harrisburg–Lebanon–Lancaster region.
-
B.
Newtown Township, Delaware County, Pennsylvania
Newtown Township, Delaware County, Pennsylvania is a suburban municipality west of Philadelphia known for its residential communities, historic sites, and part of the Main Line region.
-
C.
Ulster Township, Bradford County, Pennsylvania
Ulster Township is a small rural municipality in northeastern Pennsylvania, situated along the Susquehanna River in Bradford County.
-
D.
Durham Township, Bucks County, Pennsylvania
Durham Township, Bucks County, Pennsylvania is a small rural municipality in the northeastern part of the state, historically known for its early iron industry and colonial-era Durham Furnace.
-
E.
Durham Township, Pennsylvania
Durham Township, Pennsylvania is a small rural municipality in Bucks County known historically for its early iron-making industry centered around the Durham Furnace.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | township ⓘ |
| areaCode | 717 ⓘ |
| borders |
Conewago Township, Dauphin County, Pennsylvania
NERFINISHED
ⓘ
Lancaster County, Pennsylvania NERFINISHED ⓘ Lower Swatara Township, Dauphin County, Pennsylvania NERFINISHED ⓘ Middletown, Pennsylvania NERFINISHED ⓘ Royalton, Pennsylvania NERFINISHED ⓘ York County, Pennsylvania NERFINISHED ⓘ |
| contains |
Three Mile Island Nuclear Generating Station
NERFINISHED
ⓘ
Three Mile Island Unit 1 NERFINISHED ⓘ Three Mile Island Unit 2 NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Dauphin County NERFINISHED ⓘ |
| FIPSCode | 42-043-44440 ⓘ |
| GNISFeatureID | 1216990 ⓘ |
| governmentType | Board of Supervisors NERFINISHED ⓘ |
| hasFacility | Three Mile Island Nuclear Generating Station NERFINISHED ⓘ |
| hasIsland |
Bear Island
NERFINISHED
ⓘ
Beaver Island NERFINISHED ⓘ Goose Island NERFINISHED ⓘ Hill Island NERFINISHED ⓘ Hill Island Park NERFINISHED ⓘ Poplar Island NERFINISHED ⓘ Shelley Island NERFINISHED ⓘ Three Mile Island NERFINISHED ⓘ |
| hasLandUse |
agricultural
ⓘ
industrial ⓘ residential ⓘ |
| hasRiver | Susquehanna River NERFINISHED ⓘ |
| hasTransportation |
Pennsylvania Route 230
NERFINISHED
ⓘ
Pennsylvania Route 441 NERFINISHED ⓘ |
| knownFor |
1979 Three Mile Island nuclear accident
ⓘ
Three Mile Island nuclear power facility NERFINISHED ⓘ |
| locatedIn |
Susquehanna River Valley
NERFINISHED
ⓘ
southwestern Dauphin County ⓘ |
| locatedOn | Susquehanna River NERFINISHED ⓘ |
| namedAfter | Londonderry, Northern Ireland NERFINISHED ⓘ |
| observes |
Eastern Time Zone
ⓘ
surface form:
Eastern Daylight Time
Eastern Standard Time NERFINISHED ⓘ |
| partOf |
Harrisburg–Carlisle metropolitan area
NERFINISHED
ⓘ
Lower Susquehanna River region NERFINISHED ⓘ |
| postalCode |
17033
ⓘ
17057 ⓘ |
| state | Pennsylvania ⓘ |
| subdivisionType | township of the second class ⓘ |
| timeZone | Eastern Time Zone ⓘ |
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: Londonderry Township, Dauphin County, Pennsylvania Description of subject: Londonderry Township, Dauphin County, Pennsylvania is a municipality along the Susquehanna River best known as the site of the Three Mile Island nuclear power facility and the 1979 nuclear accident.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Three Mile Island Nuclear Generating Station
→
locatedIn
→
Londonderry Township, Dauphin County, Pennsylvania
ⓘ