Triple

T26459699
Position Surface form Disambiguated ID Type / Status
Subject Amtrak Carl Sandburg E665594 entity
Predicate railroadSubdivisionUsed P105113 FINISHED
Object BNSF Brookfield Subdivision
BNSF Brookfield Subdivision is a freight and passenger rail line in the Midwestern United States operated by BNSF Railway and used by Amtrak services such as the Carl Sandburg.
 E1728637 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 Brookfield Subdivision | Statement: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Brookfield 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 Brookfield Subdivision
Triple: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Brookfield Subdivision]
Generated description
BNSF Brookfield Subdivision is a freight and passenger rail line in the Midwestern United States operated by BNSF Railway and used by Amtrak services such as the Carl Sandburg.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: railroadSubdivisionUsed
Context triple: [Amtrak Carl Sandburg, railroadSubdivisionUsed, BNSF Brookfield 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_69f6352fdb788190b9bad30243690743 completed May 2, 2026, 5:32 p.m.
NED1 Entity disambiguation (via context triple) batch_6a11bb1d45ec819086b647458209ba77 completed May 23, 2026, 2:35 p.m.
NEDg Description generation batch_6a11be5f621881908d83370dd283a10f completed May 23, 2026, 2:49 p.m.
NED2 Entity disambiguation (via description) batch_6a11bf7e1de48190ba8ed044628d5bf7 completed May 23, 2026, 2:53 p.m.
PD Predicate disambiguation batch_69f631850ae08190a0ba51e4f1e4ccb3 completed May 2, 2026, 5:16 p.m.
Created at: April 27, 2026, 12:11 a.m.