Triple
T21167217
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line (CTA) main line |
E521596
|
entity |
| Predicate | hasBranch |
P35
|
FINISHED |
| Object | Green Line (CTA) Harlem/Lake branch |
—
|
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: Green Line (CTA) Harlem/Lake branch | Statement: [Green Line (CTA) main line, hasBranch, Green Line (CTA) Harlem/Lake branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Green Line (CTA) Harlem/Lake branch Context triple: [Green Line (CTA) main line, hasBranch, Green Line (CTA) Harlem/Lake branch]
-
A.
Green Line (CTA) main line
The Green Line (CTA) main line is a principal rapid transit route in Chicago’s 'L' system, running primarily along the South and West Sides and serving as a core corridor that branches to multiple termini.
-
B.
Yellow Line (CTA)
The Yellow Line (CTA), also known as the Skokie Swift, is a short Chicago Transit Authority rapid transit route that runs between Howard and Skokie without serving downtown Chicago.
-
C.
North Side Main Line (CTA Red Line)
The North Side Main Line is a major elevated rapid transit corridor in Chicago that carries the Chicago Transit Authority's Red Line trains through the city's North Side neighborhoods.
-
D.
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.
-
E.
Seventh Avenue Line
The Seventh Avenue Line is a major New York City Subway trunk route running along Manhattan’s Seventh Avenue, serving as a key north–south corridor for multiple subway services.
- 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: Green Line (CTA) Harlem/Lake branch Target entity description: The Green Line (CTA) Harlem/Lake branch is a segment of Chicago’s Green Line rapid transit route that serves the city’s West Side and extends into the suburb of Oak Park, terminating at Harlem/Lake station.
-
A.
Green Line (CTA) main line
chosen
The Green Line (CTA) main line is a principal rapid transit route in Chicago’s 'L' system, running primarily along the South and West Sides and serving as a core corridor that branches to multiple termini.
-
B.
Yellow Line (CTA)
The Yellow Line (CTA), also known as the Skokie Swift, is a short Chicago Transit Authority rapid transit route that runs between Howard and Skokie without serving downtown Chicago.
-
C.
North Side Main Line (CTA Red Line)
The North Side Main Line is a major elevated rapid transit corridor in Chicago that carries the Chicago Transit Authority's Red Line trains through the city's North Side neighborhoods.
-
D.
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.
-
E.
Seventh Avenue Line
The Seventh Avenue Line is a major New York City Subway trunk route running along Manhattan’s Seventh Avenue, serving as a key north–south corridor for multiple subway services.
- 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_69e0b50e30748190b186824a206d39b9 |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e7270fce708190a5715b55b406dd4e |
completed | April 21, 2026, 7:28 a.m. |
Created at: April 16, 2026, 3 p.m.