Triple
T306832
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | SEPTA Key |
E6321
|
entity |
| Predicate | usedOnSystem |
P2367
|
FINISHED |
| Object |
SEPTA City Transit Division
The SEPTA City Transit Division is the branch of Philadelphia’s regional transit authority that operates the city’s buses, trolleys, and subway–elevated lines.
|
E40466
|
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: SEPTA City Transit Division | Statement: [SEPTA Key, usedOnSystem, SEPTA City Transit Division]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SEPTA City Transit Division Context triple: [SEPTA Key, usedOnSystem, SEPTA City Transit Division]
-
A.
SEPTA rapid transit network
The SEPTA rapid transit network is the system of high-capacity urban rail lines serving Philadelphia and some surrounding suburbs, operated by the Southeastern Pennsylvania Transportation Authority.
-
B.
SEPTA Regional Rail
SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
-
C.
SEPTA Board
The SEPTA Board is the policy-making and oversight body that directs and supervises the operations, budget, and strategic decisions of the Southeastern Pennsylvania Transportation Authority.
-
D.
Southeastern Pennsylvania Transportation Authority
The Southeastern Pennsylvania Transportation Authority (SEPTA) is the regional public transit agency serving the Philadelphia metropolitan area, operating buses, subways, trolleys, and commuter rail services across southeastern Pennsylvania.
-
E.
SEPTA Broad Street Line
The SEPTA Broad Street Line is a rapid transit subway line running primarily along Broad Street in Philadelphia, providing north–south service through the city’s central corridor.
- 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: SEPTA City Transit Division Triple: [SEPTA Key, usedOnSystem, SEPTA City Transit Division]
Generated description
The SEPTA City Transit Division is the branch of Philadelphia’s regional transit authority that operates the city’s buses, trolleys, and subway–elevated lines.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SEPTA City Transit Division Target entity description: The SEPTA City Transit Division is the branch of Philadelphia’s regional transit authority that operates the city’s buses, trolleys, and subway–elevated lines.
-
A.
SEPTA rapid transit network
The SEPTA rapid transit network is the system of high-capacity urban rail lines serving Philadelphia and some surrounding suburbs, operated by the Southeastern Pennsylvania Transportation Authority.
-
B.
SEPTA Regional Rail
SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
-
C.
SEPTA Board
The SEPTA Board is the policy-making and oversight body that directs and supervises the operations, budget, and strategic decisions of the Southeastern Pennsylvania Transportation Authority.
-
D.
Southeastern Pennsylvania Transportation Authority
The Southeastern Pennsylvania Transportation Authority (SEPTA) is the regional public transit agency serving the Philadelphia metropolitan area, operating buses, subways, trolleys, and commuter rail services across southeastern Pennsylvania.
-
E.
SEPTA Broad Street Line
The SEPTA Broad Street Line is a rapid transit subway line running primarily along Broad Street in Philadelphia, providing north–south service through the city’s central corridor.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: usedOnSystem Context triple: [SEPTA Key, usedOnSystem, SEPTA City Transit Division]
-
A.
usedBySystem
Indicates that something is utilized or operated by a particular system.
-
B.
usedOn
chosen
Indicates that one entity is applied to, operated on, or otherwise utilized in relation to another entity.
-
C.
usedByTool
Indicates that a particular tool is employed or operated by a specified agent or entity.
-
D.
usedWith
Indicates that one entity is typically or appropriately employed together with another entity in a combined or complementary use.
-
E.
usesDevice
Indicates that one entity operates, employs, or relies on a particular device to perform an action or achieve a purpose.
- F. None of above.
Provenance (6 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_69a2e79230508190b912ecb555aae17e |
completed | Feb. 28, 2026, 1:03 p.m. |
| NER | Named-entity recognition | batch_69a2ea313be88190b4441f3ea41a99e2 |
completed | Feb. 28, 2026, 1:14 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3c415f83c8190b95755f23faae026 |
completed | March 1, 2026, 4:44 a.m. |
| NEDg | Description generation | batch_69a3c4a50d0c819086ab22f9a46b953a |
completed | March 1, 2026, 4:46 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a3c530f6a48190aeb056a38e417313 |
completed | March 1, 2026, 4:48 a.m. |
| PD | Predicate disambiguation | batch_69a2e93f38308190b4b480c951f1a1c3 |
completed | Feb. 28, 2026, 1:10 p.m. |
Created at: Feb. 28, 2026, 1:06 p.m.