Triple
T20270928
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line (MARTA) |
E499088
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object | MARTA CQ310 railcar |
—
|
NE NERFINISHED |
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: MARTA CQ310 railcar | Statement: [Green Line (MARTA), usesRollingStock, MARTA CQ310 railcar]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MARTA CQ310 railcar Context triple: [Green Line (MARTA), usesRollingStock, MARTA CQ310 railcar]
-
A.
MARTA heavy rail cars
chosen
MARTA heavy rail cars are electric multiple-unit subway trains used to provide rapid transit service on Atlanta’s Metropolitan Atlanta Rapid Transit Authority rail system.
-
B.
M4 railcar
The M4 railcar is an electric multiple-unit passenger train used in commuter rail service, notably on lines such as the New Haven Line.
-
C.
M2 railcar
The M2 railcar is an electric multiple-unit passenger train used by commuter rail services in the northeastern United States, particularly known for operating on the New Haven Line.
-
D.
M6 railcar
The M6 railcar is an electric multiple unit commuter train used by Metro-North Railroad, known for serving the New Haven Line between New York and Connecticut.
-
E.
CTA 3200-series railcars
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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_69da6275fa6c8190952924930adee150 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e675dd7c58819095bbf4baeda04d6a |
completed | April 20, 2026, 6:52 p.m. |
Created at: April 11, 2026, 11:42 p.m.