Triple

T26459698
Position Surface form Disambiguated ID Type / Status
Subject Amtrak Carl Sandburg E665594 entity
Predicate railroadSubdivisionUsed P105113 FINISHED
Object BNSF Mendota Subdivision
The BNSF Mendota Subdivision is a key BNSF Railway line in Illinois that carries both freight traffic and Amtrak passenger services between Chicago and western parts of the state.
 E1726225 NE FINISHED

How this triple was built (3 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: BNSF Mendota Subdivision | Statement: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Mendota Subdivision]
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: BNSF Mendota Subdivision
Triple: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Mendota Subdivision]
Generated description
The BNSF Mendota Subdivision is a key BNSF Railway line in Illinois that carries both freight traffic and Amtrak passenger services between Chicago and western parts of the state.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: railroadSubdivisionUsed
Context triple: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Mendota Subdivision]
  • A. railroadSubdivision
    Indicates that one railroad line or territory is a designated subdivision (operational segment) of a larger railroad network.
  • B. railwayDivision
    Indicates that one administrative railway division is responsible for, manages, or encompasses another railway unit, line, or area within a rail network.
  • C. railwayUse
    Indicates that something is used as, or functions in the capacity of, a railway or rail-based transportation facility.
  • D. usesRailInfrastructureOf
    Indicates that one entity operates on, accesses, or otherwise makes use of the rail infrastructure owned or managed by another entity.
  • E. servesRailCorridor chosen
    Indicates that something (such as a service, facility, or operation) provides service to or operates along a specific rail corridor.
  • F. None of above.

Provenance (6 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_69ee883e812c8190a9b5a9cdb87fee5e completed April 26, 2026, 9:48 p.m.
NER Named-entity recognition batch_69f62d53ad58819080c5227c7a729d15 completed May 2, 2026, 4:58 p.m.
NED1 Entity disambiguation (via context triple) batch_6a11aedb41708190a6cdc0de0cbd7a00 completed May 23, 2026, 1:42 p.m.
NEDg Description generation batch_6a11af82fb088190bee576d403827a3e completed May 23, 2026, 1:45 p.m.
NED2 Entity disambiguation (via description) batch_6a11b02a01f4819088f0f84f9ca335af completed May 23, 2026, 1:48 p.m.
PD Predicate disambiguation batch_69f62c15952881908a5ea0c25904afec completed May 2, 2026, 4:53 p.m.
Created at: April 27, 2026, 12:11 a.m.