Triple
T15877274
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA Yellow Line |
E384981
|
entity |
| Predicate | previouslyUsedRollingStock |
P29565
|
FINISHED |
| Object | CTA 3200-series railcars |
E100325
|
NE FINISHED |
How this triple was built (2 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: CTA 3200-series railcars | Statement: [CTA Yellow Line, previouslyUsedRollingStock, CTA 3200-series railcars]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CTA 3200-series railcars Context triple: [CTA Yellow Line, previouslyUsedRollingStock, CTA 3200-series railcars]
-
A.
CTA 3200-series railcars
chosen
The CTA 3200-series railcars are a fleet of Chicago "L" rapid transit cars introduced in the early 1990s, known for serving lines such as the Orange Line with modernized features compared to earlier series.
-
B.
CTA 2400-series railcars
The CTA 2400-series railcars were an earlier generation of Chicago Transit Authority rapid transit cars that served as a key workhorse of the “L” system before being succeeded by later series.
-
C.
CTA 2600-series railcars
The CTA 2600-series railcars are a fleet of Chicago 'L' rapid transit cars introduced in the 1980s, known for their stainless-steel bodies and long service on multiple lines in the system.
-
D.
CTA 5000-series railcars
The CTA 5000-series railcars are a modern generation of Chicago "L" rapid transit cars featuring improved accessibility, digital signage, and enhanced passenger comfort and safety systems.
-
E.
CTA 7000-series railcars
The CTA 7000-series railcars are a modern generation of Chicago Transit Authority rapid transit vehicles designed to replace older fleets with improved performance, accessibility, and passenger amenities.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d86da4e86481909f1325fdc971b5ec |
completed | April 10, 2026, 3:25 a.m. |
| NER | Named-entity recognition | batch_69e155fec9d4819081efea504e1e3952 |
completed | April 16, 2026, 9:34 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ffb043b6d48190bf9a36a3e00403c0 |
completed | May 9, 2026, 10:08 p.m. |
Created at: April 10, 2026, 4:51 a.m.