Triple

T214601
Position Surface form Disambiguated ID Type / Status
Subject Positive Train Control E4790 entity
Predicate isRelatedTo P37 FINISHED
Object Automatic Train Protection
Automatic Train Protection is a safety system used on railways to automatically enforce speed limits and signal obedience, preventing collisions and other accidents caused by human error.
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 Protection | Statement: [Positive Train Control, isRelatedTo, Automatic Train Protection]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Automatic Train Protection
Context triple: [Positive Train Control, isRelatedTo, Automatic Train Protection]
  • A. 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.
  • B. 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.
  • 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. 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.
  • E. Rail Safety Improvement Act of 2008
    The Rail Safety Improvement Act of 2008 is a U.S. federal law that significantly overhauled rail safety regulations, including mandating positive train control systems and strengthening oversight to reduce accidents and improve railroad safety.
  • 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 Protection
Triple: [Positive Train Control, isRelatedTo, Automatic Train Protection]
Generated description
Automatic Train Protection is a safety system used on railways to automatically enforce speed limits and signal obedience, preventing collisions and other accidents caused by human error.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Automatic Train Protection
Target entity description: Automatic Train Protection is a safety system used on railways to automatically enforce speed limits and signal obedience, preventing collisions and other accidents caused by human error.
  • A. Automatic Train Control chosen
    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.
  • B. 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.
  • 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. 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.
  • E. Rail Safety Improvement Act of 2008
    The Rail Safety Improvement Act of 2008 is a U.S. federal law that significantly overhauled rail safety regulations, including mandating positive train control systems and strengthening oversight to reduce accidents and improve railroad safety.
  • F. None of above.

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_69a34766506c8190a4c661410e0d8b33 completed Feb. 28, 2026, 7:52 p.m.
NEDg Description generation batch_69a34c38fc2881908afe5d3ef34db98e completed Feb. 28, 2026, 8:12 p.m.
NED2 Entity disambiguation (via description) batch_69a34ca4faec8190bd09fa0e87fe0bd5 completed Feb. 28, 2026, 8:14 p.m.
Created at: Feb. 28, 2026, 2:52 a.m.