Triple
T16758660
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | BART Green Line |
E407276
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
BART C2 cars
BART C2 cars are a later-generation series of Bay Area Rapid Transit rail vehicles designed to expand and modernize the system’s electric multiple-unit fleet.
|
E1236428
|
NE FINISHED |
How this triple was built (4 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: BART C2 cars | Statement: [BART Green Line, usesRollingStock, BART C2 cars]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BART C2 cars Context triple: [BART Green Line, usesRollingStock, BART C2 cars]
-
A.
BART A/2 cars
BART A/2 cars are an early-generation series of electric multiple unit railcars used on the San Francisco Bay Area Rapid Transit system.
-
B.
CTA 2200-series railcars
The CTA 2200-series railcars were a fleet of Chicago 'L' rapid transit cars built in the late 1960s, notable for their fluted stainless-steel sides and “blinker” door configuration, which served the system for several decades before retirement.
-
C.
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.
-
D.
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.
-
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. 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: BART C2 cars Triple: [BART Green Line, usesRollingStock, BART C2 cars]
Generated description
BART C2 cars are a later-generation series of Bay Area Rapid Transit rail vehicles designed to expand and modernize the system’s electric multiple-unit fleet.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: BART C2 cars Target entity description: BART C2 cars are a later-generation series of Bay Area Rapid Transit rail vehicles designed to expand and modernize the system’s electric multiple-unit fleet.
-
A.
BART A/2 cars
BART A/2 cars are an early-generation series of electric multiple unit railcars used on the San Francisco Bay Area Rapid Transit system.
-
B.
CTA 2200-series railcars
The CTA 2200-series railcars were a fleet of Chicago 'L' rapid transit cars built in the late 1960s, notable for their fluted stainless-steel sides and “blinker” door configuration, which served the system for several decades before retirement.
-
C.
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.
-
D.
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.
-
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. chosen
Provenance (5 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_69d8839174188190909f190097207065 |
completed | April 10, 2026, 4:58 a.m. |
| NER | Named-entity recognition | batch_69e3abea156c8190a5ee6d0028471810 |
completed | April 18, 2026, 4:06 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a00bb069cf481908e029b26ad96d3b5 |
completed | May 10, 2026, 5:06 p.m. |
| NEDg | Description generation | batch_6a00bc136bfc8190ab93cd8e0e7eaf1c |
completed | May 10, 2026, 5:10 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a00bca0a3808190be3d1d7ebd77cc20 |
completed | May 10, 2026, 5:13 p.m. |
Created at: April 10, 2026, 5:21 a.m.