Triple

T458792
Position Surface form Disambiguated ID Type / Status
Subject Peninsula Commute E7289 entity
Predicate usedInfrastructure P6820 FINISHED
Object Peninsula rail corridor
The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
E58161 NE FINISHED

How this triple was built (5 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: Peninsula rail corridor | Statement: [Peninsula Commute, usedInfrastructure, Peninsula rail corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Peninsula rail corridor
Context triple: [Peninsula Commute, usedInfrastructure, Peninsula rail corridor]
  • A. Northstar commuter rail
    Northstar commuter rail is a commuter train service in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with northern suburbs and exurban communities.
  • B. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • C. Geneva Spur
    Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
  • D. Amtrak Empire Corridor
    The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
  • E. Keystone Corridor
    Keystone Corridor is a major passenger rail route in Pennsylvania that connects Philadelphia with Harrisburg and other central Pennsylvania destinations.
  • 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: Peninsula rail corridor
Triple: [Peninsula Commute, usedInfrastructure, Peninsula rail corridor]
Generated description
The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Peninsula rail corridor
Target entity description: The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
  • A. Northstar commuter rail
    Northstar commuter rail is a commuter train service in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with northern suburbs and exurban communities.
  • B. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • C. Geneva Spur
    Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
  • D. Amtrak Empire Corridor
    The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
  • E. Keystone Corridor
    Keystone Corridor is a major passenger rail route in Pennsylvania that connects Philadelphia with Harrisburg and other central Pennsylvania destinations.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: usedInfrastructure
Context triple: [Peninsula Commute, usedInfrastructure, Peninsula rail corridor]
  • A. usesInfrastructure chosen
    Indicates that one entity makes use of, depends on, or operates through the infrastructure provided or managed by another entity.
  • B. usedEquipmentFrom
    Indicates that one entity has utilized or operated equipment that originated from or was provided by another entity.
  • C. usedAt
    Indicates that something is employed, applied, or utilized at a particular place, time, or context.
  • D. usedComponent
    Indicates that one entity has employed or incorporated another entity as a component in its structure, function, or operation.
  • E. ownerOfInfrastructureUsed
    Indicates that one entity owns the infrastructure that is being used by another entity or activity.
  • 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_69a2e7e5c5bc8190a1dc8178218fba40 completed Feb. 28, 2026, 1:04 p.m.
NER Named-entity recognition batch_69a2efa4a6208190a8243a0e14f84f52 completed Feb. 28, 2026, 1:37 p.m.
NED1 Entity disambiguation (via context triple) batch_69a452947cd0819084fd885afce26da8 completed March 1, 2026, 2:52 p.m.
NEDg Description generation batch_69a4539f00008190a736df2fcaf3109a completed March 1, 2026, 2:56 p.m.
NED2 Entity disambiguation (via description) batch_69a4541cd02081908b8534b24d3933ff completed March 1, 2026, 2:58 p.m.
PD Predicate disambiguation batch_69a2ede75b6c81908350103d21f22a03 completed Feb. 28, 2026, 1:30 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.