Triple
T143457
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | SEPTA Regional Rail |
E2901
|
entity |
| Predicate | usesInfrastructure |
P6820
|
FINISHED |
| Object |
Center City Commuter Connection
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
|
E30169
|
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: Center City Commuter Connection | Statement: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Center City Commuter Connection Context triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
-
A.
Penn Line
The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
-
B.
Shore Line East
Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
-
C.
Jerome Avenue Line
The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
-
D.
White Plains Road Line
The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
-
E.
Lenox Avenue Line
The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
- 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: Center City Commuter Connection Triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
Generated description
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Center City Commuter Connection Target entity description: The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
-
A.
Penn Line
The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
-
B.
Shore Line East
Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
-
C.
Jerome Avenue Line
The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
-
D.
White Plains Road Line
The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
-
E.
Lenox Avenue Line
The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: usesInfrastructure Context triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
-
A.
hasInfrastructureType
Indicates that an entity possesses or is associated with a specific category or type of infrastructure.
-
B.
usedOn
Indicates that one entity is applied to, operated on, or otherwise utilized in relation to another entity.
-
C.
usesEquipment
Indicates that an entity employs or operates a particular piece of equipment to perform an action or fulfill a function.
-
D.
usedWith
Indicates that one entity is typically or appropriately employed together with another entity in a combined or complementary use.
-
E.
usesBuilding
Indicates that one entity makes use of, occupies, or operates within a particular building.
- 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_69a2521e35c08190b28e5c9f1e3c9b59 |
completed | Feb. 28, 2026, 2:25 a.m. |
| NER | Named-entity recognition | batch_69a2580ca15481909fa3e87d804a1b23 |
completed | Feb. 28, 2026, 2:50 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a36473a3d88190b20052b2c0d272a2 |
completed | Feb. 28, 2026, 9:56 p.m. |
| NEDg | Description generation | batch_69a365272a248190866d714fc51b5cba |
completed | Feb. 28, 2026, 9:59 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a3658e27bc8190a97ede95a99bc187 |
completed | Feb. 28, 2026, 10 p.m. |
| PD | Predicate disambiguation | batch_69a2565559ac81909e0c4e095a7dfa27 |
completed | Feb. 28, 2026, 2:43 a.m. |
| PDg | Predicate description generation | batch_69a2580b00988190868ee24c0289cf70 |
completed | Feb. 28, 2026, 2:50 a.m. |
Created at: Feb. 28, 2026, 2:31 a.m.