Triple
T1449957
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Baltimore Metro SubwayLink |
E31267
|
entity |
| Predicate | lineName |
P28725
|
FINISHED |
| Object |
Northwest–East Line
The Northwest–East Line is the primary rapid transit route of Baltimore's Metro SubwayLink system, running across the city from the northwest suburbs toward the eastern side.
|
E168311
|
NE FINISHED |
How this triple was built (5 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: Northwest–East Line | Statement: [Baltimore Metro SubwayLink, lineName, Northwest–East Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Northwest–East Line Context triple: [Baltimore Metro SubwayLink, lineName, Northwest–East Line]
-
A.
Dyre Avenue Line
The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
-
B.
Pink Line
The Pink Line is a rapid transit route in Chicago's "L" system that runs between the Loop and the city's West Side neighborhoods.
-
C.
Heritage Corridor line
The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
-
D.
Sounder North Line
The Sounder North Line is a commuter rail service in the Seattle metropolitan area that runs along the Puget Sound, connecting Seattle with communities to the north such as Everett.
-
E.
Blue Line
The Blue Line is a major rapid transit route in Chicago that runs between O'Hare International Airport and the city's western suburbs via downtown.
- 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: Northwest–East Line Triple: [Baltimore Metro SubwayLink, lineName, Northwest–East Line]
Generated description
The Northwest–East Line is the primary rapid transit route of Baltimore's Metro SubwayLink system, running across the city from the northwest suburbs toward the eastern side.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Northwest–East Line Target entity description: The Northwest–East Line is the primary rapid transit route of Baltimore's Metro SubwayLink system, running across the city from the northwest suburbs toward the eastern side.
-
A.
Dyre Avenue Line
The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
-
B.
Pink Line
The Pink Line is a rapid transit route in Chicago's "L" system that runs between the Loop and the city's West Side neighborhoods.
-
C.
Heritage Corridor line
The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
-
D.
Sounder North Line
The Sounder North Line is a commuter rail service in the Seattle metropolitan area that runs along the Puget Sound, connecting Seattle with communities to the north such as Everett.
-
E.
Blue Line
The Blue Line is one of the primary heavy-rail transit routes in Atlanta’s MARTA system, running east–west across the metropolitan area and serving key urban and suburban stations.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: lineName Context triple: [Baltimore Metro SubwayLink, lineName, Northwest–East Line]
-
A.
formerLineName
Indicates that the object is a previous or former name by which the referenced line was known.
-
B.
railwayLine
Indicates that there is a railway line connection or route associated with or passing through the referenced entity.
-
C.
lineServed
Indicates that a particular transportation line (such as a bus, train, or metro line) provides service to or is operated at a given stop, station, or route segment.
-
D.
lineSymbol
Indicates that one entity is used as a line-style or line-representation symbol for another entity.
-
E.
subwayLine
Indicates that there is a subway line connection or service relationship between the referenced entities.
- F. None of above. chosen
Provenance (7 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_69a499171a28819085b993a3ac78e363 |
completed | March 1, 2026, 7:52 p.m. |
| NER | Named-entity recognition | batch_69a4c55d923c8190957756f834f94462 |
completed | March 1, 2026, 11:01 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad15a0adb0819096c560e8aa317016 |
completed | March 8, 2026, 6:22 a.m. |
| NEDg | Description generation | batch_69ad167e85488190be549df90e892fed |
completed | March 8, 2026, 6:26 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad16c8df5c819089809f2eee6f27ee |
completed | March 8, 2026, 6:27 a.m. |
| PD | Predicate disambiguation | batch_69a4c47a840c819083307a65c027a19e |
completed | March 1, 2026, 10:58 p.m. |
| PDg | Predicate description generation | batch_69a4c55508948190922aee3230a4323e |
completed | March 1, 2026, 11:01 p.m. |
Created at: March 1, 2026, 8 p.m.