Pennsylvania's 18th congressional district
E569227
Pennsylvania's 18th congressional district was a U.S. House district centered on the Pittsburgh area, historically represented by prominent lawmakers before being eliminated in the 2018 redistricting.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Pennsylvania's 18th congressional district canonical | 4 |
| Pennsylvania's 18th congressional district (post-2010s map) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6111638 — 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: Pennsylvania's 18th congressional district Context triple: [North Braddock, Pennsylvania, isInCongressionalDistrict, Pennsylvania's 18th congressional district]
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A.
Pennsylvania's 8th congressional district
Pennsylvania's 8th congressional district is a U.S. House of Representatives district in northeastern Pennsylvania that has historically included parts of the Scranton–Wilkes-Barre and Philadelphia suburban regions, and was once represented by influential abolitionist Thaddeus Stevens.
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B.
Pennsylvania's 15th congressional district
Pennsylvania's 15th congressional district is a U.S. House of Representatives district in Pennsylvania that has historically covered a largely rural and small-city region of the state.
-
C.
Pennsylvania's 11th congressional district
Pennsylvania's 11th congressional district is a U.S. House of Representatives district in Pennsylvania historically associated with influential 19th-century congressman and abolitionist Thaddeus Stevens.
-
D.
Pennsylvania's 21st congressional district
Pennsylvania's 21st congressional district was a former U.S. House district in northwestern Pennsylvania that included areas such as Erie and was once represented by future governor Tom Ridge.
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E.
Pennsylvania's 26th congressional district
Pennsylvania's 26th congressional district was a former U.S. House district in Pennsylvania that existed in the 19th and early 20th centuries before being eliminated through redistricting.
- 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: Pennsylvania's 18th congressional district Target entity description: Pennsylvania's 18th congressional district was a U.S. House district centered on the Pittsburgh area, historically represented by prominent lawmakers before being eliminated in the 2018 redistricting.
-
A.
Pennsylvania's 8th congressional district
Pennsylvania's 8th congressional district is a U.S. House of Representatives district in northeastern Pennsylvania that has historically included parts of the Scranton–Wilkes-Barre and Philadelphia suburban regions, and was once represented by influential abolitionist Thaddeus Stevens.
-
B.
Pennsylvania's 15th congressional district
Pennsylvania's 15th congressional district is a U.S. House of Representatives district in Pennsylvania that has historically covered a largely rural and small-city region of the state.
-
C.
Pennsylvania's 11th congressional district
Pennsylvania's 11th congressional district is a U.S. House of Representatives district in Pennsylvania historically associated with influential 19th-century congressman and abolitionist Thaddeus Stevens.
-
D.
Pennsylvania's 21st congressional district
Pennsylvania's 21st congressional district was a former U.S. House district in northwestern Pennsylvania that included areas such as Erie and was once represented by future governor Tom Ridge.
-
E.
Pennsylvania's 26th congressional district
Pennsylvania's 26th congressional district was a former U.S. House district in Pennsylvania that existed in the 19th and early 20th centuries before being eliminated through redistricting.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | former United States congressional district ⓘ |
| chamber | lower house of the United States Congress ⓘ |
| containedMajorCity | Pittsburgh, Pennsylvania ⓘ |
| country | United States of America ⓘ |
| created | 1833 ⓘ |
| electionType | first-past-the-post ⓘ |
| eliminated | 2018 ⓘ |
| geographicRegion | Southwestern Pennsylvania ⓘ |
| governingLawForRedistricting | Pennsylvania Supreme Court 2018 redistricting decision ⓘ |
| historicalPartyLeaning |
Democratic-leaning (earlier configurations)
ⓘ
Republican-leaning (early 2000s configuration) ⓘ |
| jurisdiction | federal elections in Pennsylvania ⓘ |
| lastCongressionalApportionmentUsed | 2010 United States census ⓘ |
| lastRepresentative | Michael F. Doyle ⓘ |
| legislativeBody | United States House of Representatives ⓘ |
| locatedIn |
Allegheny County, Pennsylvania
ⓘ
linked to:
Allegheny County
Commonwealth of Pennsylvania ⓘ
linked to:
Pennsylvania
Greene County, Pennsylvania ⓘ Pittsburgh metropolitan area ⓘ
linked to:
Pittsburgh region
Washington County, Pennsylvania ⓘ Westmoreland County, Pennsylvania ⓘ |
| mapRedrawnIn |
2002
ⓘ
2012 ⓘ 2018 ⓘ |
| notableRepresentative |
Doug Walgren
ⓘ
James A. Byrne ⓘ Michael F. Doyle ⓘ Rick Santorum ⓘ Tim Murphy ⓘ |
| partOf |
United States House of Representatives districts in Pennsylvania
ⓘ
linked to:
Pennsylvania congressional districts
|
| partyOfLastRepresentative |
Democratic Party (United States)
ⓘ
linked to:
Democratic Party
|
| reasonForAbolition | 2018 Pennsylvania congressional district map redrawing ⓘ |
| representedArea |
City of Pittsburgh (southern neighborhoods, at various times)
ⓘ
linked to:
Pittsburgh neighborhoods
Monongahela Valley communities ⓘ
linked to:
Monongahela River Valley
South Hills suburbs of Pittsburgh ⓘ parts of southwestern Pennsylvania coal and steel communities ⓘ |
| representedLevel | federal ⓘ |
| representedPopulationBasis | decennial United States census apportionment ⓘ |
| state | Pennsylvania ⓘ |
| status | defunct ⓘ |
| successorDistrict |
Pennsylvania's 14th congressional district (post‑2018 map)
ⓘ
linked to:
Pennsylvania's 14th congressional district
Pennsylvania's 17th congressional district ⓘ |
| usedInCongressNumber |
113th United States Congress
ⓘ
114th United States Congress ⓘ 115th United States Congress ⓘ |
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: Pennsylvania's 18th congressional district Description of subject: Pennsylvania's 18th congressional district was a U.S. House district centered on the Pittsburgh area, historically represented by prominent lawmakers before being eliminated in the 2018 redistricting.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
North Braddock, Pennsylvania
→
isInCongressionalDistrict
→
Pennsylvania's 18th congressional district
ⓘ
Pennsylvania's 14th congressional district
→
successor
→
Pennsylvania's 18th congressional district (post-2010s map)
ⓘ
linked to: Pennsylvania's 18th congressional district