Triple
T4462295
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA 2600-series railcars |
E98283
|
entity |
| Predicate | manufacturer |
P490
|
FINISHED |
| Object |
Transit America
Transit America is a railcar manufacturing company known for producing Chicago Transit Authority’s 2600-series rapid transit cars.
|
E443193
|
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: Transit America | Statement: [CTA 2600-series railcars, manufacturer, Transit America]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Transit America Context triple: [CTA 2600-series railcars, manufacturer, Transit America]
-
A.
Amtrak Thruway Motorcoach
Amtrak Thruway Motorcoach is a network of intercity bus services that connect communities without rail stations to Amtrak’s passenger train system across various regions in the United States.
-
B.
Transit Bureau
The Transit Bureau is the division of the New York City Police Department responsible for policing and ensuring safety within the city’s public transit system, particularly the subway.
-
C.
Greenway Public Transportation
Greenway Public Transportation is a regional public transit agency providing bus and demand-response services in and around Newton, North Carolina.
-
D.
Woodstock Transit
Woodstock Transit is the municipal public transportation agency serving the city of Woodstock in Ontario, Canada.
-
E.
Connect Transit
Connect Transit is the primary public bus system serving the Bloomington–Normal metropolitan area in Illinois.
- 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: Transit America Triple: [CTA 2600-series railcars, manufacturer, Transit America]
Generated description
Transit America is a railcar manufacturing company known for producing Chicago Transit Authority’s 2600-series rapid transit cars.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Transit America Target entity description: Transit America is a railcar manufacturing company known for producing Chicago Transit Authority’s 2600-series rapid transit cars.
-
A.
Amtrak Thruway Motorcoach
Amtrak Thruway Motorcoach is a network of intercity bus services that connect communities without rail stations to Amtrak’s passenger train system across various regions in the United States.
-
B.
Transit Bureau
The Transit Bureau is the division of the New York City Police Department responsible for policing and ensuring safety within the city’s public transit system, particularly the subway.
-
C.
Greenway Public Transportation
Greenway Public Transportation is a regional public transit agency providing bus and demand-response services in and around Newton, North Carolina.
-
D.
Woodstock Transit
Woodstock Transit is the municipal public transportation agency serving the city of Woodstock in Ontario, Canada.
-
E.
Connect Transit
Connect Transit is the primary public bus system serving the Bloomington–Normal metropolitan area in Illinois.
- 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_69b3454a7c608190944f5455c8031d73 |
completed | March 12, 2026, 10:59 p.m. |
| NER | Named-entity recognition | batch_69b3567716a4819092a5bc9732e74592 |
completed | March 13, 2026, 12:12 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b6284b90708190b557b66bd7533f4e |
completed | March 15, 2026, 3:32 a.m. |
| NEDg | Description generation | batch_69b629532cac8190b959adc0ef13305a |
completed | March 15, 2026, 3:36 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b62d9c287c8190a305f9d21517f913 |
completed | March 15, 2026, 3:55 a.m. |
Created at: March 12, 2026, 11:34 p.m.