Triple
T10416117
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Steel Plaza station |
E245519
|
entity |
| Predicate | hasService |
P182
|
FINISHED |
| Object |
Pittsburgh Light Rail Red Line
The Pittsburgh Light Rail Red Line is a major light rail route in Pittsburgh, Pennsylvania, connecting downtown with several southern neighborhoods and suburbs.
|
E866563
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Pittsburgh Light Rail Red Line | Statement: [Steel Plaza station, hasService, Pittsburgh Light Rail Red Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh Light Rail Red Line Context triple: [Steel Plaza station, hasService, Pittsburgh Light Rail Red Line]
-
A.
Pittsburgh Light Rail Blue Line
The Pittsburgh Light Rail Blue Line is a light rail service in Pittsburgh, Pennsylvania, that connects downtown with various southern suburbs as part of the Port Authority’s “T” system.
-
B.
Cleveland RTA Red Line
The Cleveland RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the city’s east side via downtown.
-
C.
Ravenswood Line
The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
-
D.
River Line light rail
River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
-
E.
Baltimore Light Rail
Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Pittsburgh Light Rail Red Line Triple: [Steel Plaza station, hasService, Pittsburgh Light Rail Red Line]
Generated description
The Pittsburgh Light Rail Red Line is a major light rail route in Pittsburgh, Pennsylvania, connecting downtown with several southern neighborhoods and suburbs.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh Light Rail Red Line Target entity description: The Pittsburgh Light Rail Red Line is a major light rail route in Pittsburgh, Pennsylvania, connecting downtown with several southern neighborhoods and suburbs.
-
A.
Pittsburgh Light Rail Blue Line
The Pittsburgh Light Rail Blue Line is a light rail service in Pittsburgh, Pennsylvania, that connects downtown with various southern suburbs as part of the Port Authority’s “T” system.
-
B.
Cleveland RTA Red Line
The Cleveland RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the city’s east side via downtown.
-
C.
Ravenswood Line
The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
-
D.
River Line light rail
River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
-
E.
Baltimore Light Rail
Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69d381be340c8190b05998703d42d224 |
completed | April 6, 2026, 9:49 a.m. |
| NER | Named-entity recognition | batch_69d4ea108fec8190819423630888fa2b |
completed | April 7, 2026, 11:27 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d8dc2b06188190ad399e1b5a545aec |
completed | April 10, 2026, 11:16 a.m. |
| NEDg | Description generation | batch_69d8e8c683608190aa4333ed38e79f53 |
completed | April 10, 2026, 12:10 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69d901c7684c8190837ed9ef0c2428af |
completed | April 10, 2026, 1:57 p.m. |
Created at: April 6, 2026, 12:10 p.m.