Triple
T1122010
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak Northeast Regional |
E24631
|
entity |
| Predicate | locomotiveUsed |
P5426
|
FINISHED |
| Object |
GE P42DC (on non-electrified segments historically)
The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
|
E127706
|
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: GE P42DC (on non-electrified segments historically) | Statement: [Amtrak Northeast Regional, locomotiveUsed, GE P42DC (on non-electrified segments historically)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: GE P42DC (on non-electrified segments historically) Context triple: [Amtrak Northeast Regional, locomotiveUsed, GE P42DC (on non-electrified segments historically)]
-
A.
GG1 electric locomotive
The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
-
B.
DE30AC locomotive
The DE30AC locomotive is a diesel-electric passenger locomotive built by EMD for the Long Island Rail Road, designed for push-pull commuter service with head-end power.
-
C.
PRR K4s
The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
-
D.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
E.
PA-3 railcars
The PA-3 railcars are a series of electric multiple-unit subway cars used on the PATCO Speedline rapid transit system serving the Philadelphia–Camden region.
- 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: GE P42DC (on non-electrified segments historically) Triple: [Amtrak Northeast Regional, locomotiveUsed, GE P42DC (on non-electrified segments historically)]
Generated description
The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: GE P42DC (on non-electrified segments historically) Target entity description: The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
-
A.
GG1 electric locomotive
The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
-
B.
DE30AC locomotive
The DE30AC locomotive is a diesel-electric passenger locomotive built by EMD for the Long Island Rail Road, designed for push-pull commuter service with head-end power.
-
C.
PRR K4s
The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
-
D.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
E.
PA-3 railcars
The PA-3 railcars are a series of electric multiple-unit subway cars used on the PATCO Speedline rapid transit system serving the Philadelphia–Camden region.
- 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_69a4940712c88190aa244f3fc6070a65 |
completed | March 1, 2026, 7:31 p.m. |
| NER | Named-entity recognition | batch_69a4bf0ecd448190affb5c24c3520732 |
completed | March 1, 2026, 10:34 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ac539d51848190a9eb9ddaa7e4c6a8 |
completed | March 7, 2026, 4:34 p.m. |
| NEDg | Description generation | batch_69ac54426e3c8190af166a54af44e210 |
completed | March 7, 2026, 4:37 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ac54bb7b148190ba1c8ab2202cf429 |
completed | March 7, 2026, 4:39 p.m. |
Created at: March 1, 2026, 7:44 p.m.