Fern Rock–Olney express segment
E260831
The Fern Rock–Olney express segment is a high-speed express portion of SEPTA’s Broad Street Line in Philadelphia that provides faster service between Fern Rock Transportation Center and the Olney Transportation Center.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fern Rock–Olney express segment canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2383619 — 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: Fern Rock–Olney express segment Context triple: [Broad Street Line, hasBranch, Fern Rock–Olney express segment]
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A.
Bladensburg Road NE corridor
Bladensburg Road NE corridor is a major commercial and transportation artery in Northeast Washington, D.C., lined with retail, industrial sites, and residential neighborhoods.
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B.
Silver Line Way
Silver Line Way is a transit station in Boston, Massachusetts, serving the MBTA Silver Line bus rapid transit routes in the Seaport District.
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C.
Geneva Spur
Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
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D.
Dulles Corridor
Dulles Corridor is a major high-technology and business hub in Northern Virginia that stretches along the Dulles Toll Road and connects the Washington, D.C. suburbs to Washington Dulles International Airport.
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E.
Dulles Greenway
Dulles Greenway is a privately owned toll road in Northern Virginia that connects Washington Dulles International Airport with communities in Loudoun County.
- 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: Fern Rock–Olney express segment Target entity description: The Fern Rock–Olney express segment is a high-speed express portion of SEPTA’s Broad Street Line in Philadelphia that provides faster service between Fern Rock Transportation Center and the Olney Transportation Center.
-
A.
Bladensburg Road NE corridor
Bladensburg Road NE corridor is a major commercial and transportation artery in Northeast Washington, D.C., lined with retail, industrial sites, and residential neighborhoods.
-
B.
Silver Line Way
Silver Line Way is a transit station in Boston, Massachusetts, serving the MBTA Silver Line bus rapid transit routes in the Seaport District.
-
C.
Geneva Spur
Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
-
D.
Dulles Corridor
Dulles Corridor is a major high-technology and business hub in Northern Virginia that stretches along the Dulles Toll Road and connects the Washington, D.C. suburbs to Washington Dulles International Airport.
-
E.
Dulles Greenway
Dulles Greenway is a privately owned toll road in Northern Virginia that connects Washington Dulles International Airport with communities in Loudoun County.
- F. None of above. chosen
Statements (25)
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: Fern Rock–Olney express segment Description of subject: The Fern Rock–Olney express segment is a high-speed express portion of SEPTA’s Broad Street Line in Philadelphia that provides faster service between Fern Rock Transportation Center and the Olney Transportation Center.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.