Triple
T214600
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Positive Train Control |
E4790
|
entity |
| Predicate | isRelatedTo |
P37
|
FINISHED |
| Object |
Automatic Train Control
Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
|
E27668
|
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: Automatic Train Control | Statement: [Positive Train Control, isRelatedTo, Automatic Train Control]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Automatic Train Control Context triple: [Positive Train Control, isRelatedTo, Automatic Train Control]
-
A.
Positive Train Control
Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
-
B.
MARC Train
MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
-
C.
Federal Railroad Safety Act
The Federal Railroad Safety Act is a U.S. law that establishes nationwide standards and regulatory authority to promote and enforce the safety of railroad operations.
-
D.
C train
The C train is a local service on the New York City Subway’s Eighth Avenue Line, running primarily between Upper Manhattan and Brooklyn.
-
E.
2 train
The 2 train is a New York City Subway service that runs as a numbered, typically express route on the IRT lines, connecting the Bronx, Manhattan, and Brooklyn.
- 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: Automatic Train Control Triple: [Positive Train Control, isRelatedTo, Automatic Train Control]
Generated description
Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Automatic Train Control Target entity description: Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
-
A.
Positive Train Control
Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
-
B.
MARC Train
MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
-
C.
Federal Railroad Safety Act
The Federal Railroad Safety Act is a U.S. law that establishes nationwide standards and regulatory authority to promote and enforce the safety of railroad operations.
-
D.
C train
The C train is a local service on the New York City Subway’s Eighth Avenue Line, running primarily between Upper Manhattan and Brooklyn.
-
E.
2 train
The 2 train is a New York City Subway service that runs as a numbered, typically express route on the IRT lines, connecting the Bronx, Manhattan, and Brooklyn.
- 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_69a2575cb1dc8190a01ad332426dc339 |
completed | Feb. 28, 2026, 2:47 a.m. |
| NER | Named-entity recognition | batch_69a25c32ae208190a03d504ef43ea659 |
completed | Feb. 28, 2026, 3:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3441cc15c8190910b1b9e5dbb4910 |
completed | Feb. 28, 2026, 7:38 p.m. |
| NEDg | Description generation | batch_69a344e390f4819090ec79beb681310a |
completed | Feb. 28, 2026, 7:41 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a34551abac8190a1d3f2fc3f783c71 |
completed | Feb. 28, 2026, 7:43 p.m. |
Created at: Feb. 28, 2026, 2:52 a.m.