Triple
T17815837
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA 2400-series railcars |
E444836
|
entity |
| Predicate | usedOnLine |
P15252
|
FINISHED |
| Object | Yellow Line |
—
|
NE NERFINISHED |
How this triple was built (3 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: Yellow Line | Statement: [CTA 2400-series railcars, usedOnLine, Yellow Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Yellow Line Context triple: [CTA 2400-series railcars, usedOnLine, Yellow Line]
-
A.
Yellow Line
The Yellow Line is one of the color-coded rapid transit routes in the Washington Metro system, running primarily in a north–south direction and serving key areas in Washington, D.C. and Northern Virginia.
-
B.
Yellow Line
The Yellow Line is a designated route within the Baltimore Light Rail system that serves as one of its primary color-coded service lines.
-
C.
Yellow Line
The Yellow Line is a Bay Area Rapid Transit (BART) service route that runs between Antioch in the East Bay and San Francisco International Airport/Millbrae on the San Francisco Peninsula.
-
D.
Yellow Line
Yellow Line is one of the principal urban cable car routes in La Paz–El Alto’s Mi Teleférico system, providing high-altitude public transit and panoramic city views.
-
E.
Yellow Line
The Yellow Line is a regional SolanoExpress bus route providing public transit connections within Solano County and to neighboring areas.
- 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: Yellow Line Target entity description: The Yellow Line is a rapid transit route in the Chicago "L" system operated by the Chicago Transit Authority, connecting the northern suburbs to the city's rail network.
-
A.
Yellow Line
chosen
The Yellow Line is a rapid transit route in Chicago's 'L' system that connects the northern suburb of Skokie to the city's rail network.
-
B.
Yellow Line
The Yellow Line is one of the color-coded rapid transit routes in the Washington Metro system, running primarily in a north–south direction and serving key areas in Washington, D.C. and Northern Virginia.
-
C.
Yellow Line
Yellow Line is one of the major rapid transit corridors of the Delhi Metro network, connecting key areas across Delhi and its neighboring regions.
-
D.
Yellow Line
The Yellow Line is a designated route within the Baltimore Light Rail system that serves as one of its primary color-coded service lines.
-
E.
Yellow Line
The Yellow Line is a MAX Light Rail service in the Portland metropolitan area that connects downtown Portland with the northern neighborhoods and suburbs.
- F. None of above.
Provenance (2 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_69d8b9f0de78819099395b14db75a8a6 |
completed | April 10, 2026, 8:50 a.m. |
| NER | Named-entity recognition | batch_69e4887f7d048190b6d813b9f0fab3e7 |
completed | April 19, 2026, 7:47 a.m. |
Created at: April 10, 2026, 10:14 a.m.