Triple

T398882
Position Surface form Disambiguated ID Type / Status
Subject Pittsburgh, Cincinnati, Chicago and St. Louis Railroad E9234 entity
Predicate alsoKnownAs P39 FINISHED
Object PCC&StL
PCC&StL refers to the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, a historic Midwestern and Eastern U.S. rail system that became a key component of the Pennsylvania Railroad network.
E50402 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: PCC&StL | Statement: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, alsoKnownAs, PCC&StL]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: PCC&StL
Context triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, alsoKnownAs, PCC&StL]
  • A. St. Louis metropolitan area
    The St. Louis metropolitan area is a bi-state urban region centered on the city of St. Louis, spanning parts of Missouri and Illinois and serving as a major Midwestern hub for culture, education, and industry.
  • B. St. Louis, Missouri, United States
    St. Louis, Missouri, United States is a major Midwestern city on the Mississippi River known for its iconic Gateway Arch, rich musical and cultural heritage, and historical role as a gateway to the American West.
  • C. Chicago Card
    Chicago Card was a contactless smart fare card once used for public transit payments in the Chicago area before being phased out in favor of the Ventra system.
  • D. STLA
    STLA is the stock ticker symbol for Stellantis, a multinational automotive manufacturer formed from the merger of Fiat Chrysler Automobiles and PSA Group.
  • E. St. Louis Post-Dispatch
    The St. Louis Post-Dispatch is a major daily newspaper based in St. Louis, Missouri, long known for its influential journalism and progressive editorial stance.
  • 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: PCC&StL
Triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, alsoKnownAs, PCC&StL]
Generated description
PCC&StL refers to the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, a historic Midwestern and Eastern U.S. rail system that became a key component of the Pennsylvania Railroad network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: PCC&StL
Target entity description: PCC&StL refers to the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, a historic Midwestern and Eastern U.S. rail system that became a key component of the Pennsylvania Railroad network.
  • A. St. Louis metropolitan area
    The St. Louis metropolitan area is a bi-state urban region centered on the city of St. Louis, spanning parts of Missouri and Illinois and serving as a major Midwestern hub for culture, education, and industry.
  • B. St. Louis, Missouri, United States
    St. Louis, Missouri, United States is a major Midwestern city on the Mississippi River known for its iconic Gateway Arch, rich musical and cultural heritage, and historical role as a gateway to the American West.
  • C. Chicago Card
    Chicago Card was a contactless smart fare card once used for public transit payments in the Chicago area before being phased out in favor of the Ventra system.
  • D. STLA
    STLA is the stock ticker symbol for Stellantis, a multinational automotive manufacturer formed from the merger of Fiat Chrysler Automobiles and PSA Group.
  • E. St. Louis Post-Dispatch
    The St. Louis Post-Dispatch is a major daily newspaper based in St. Louis, Missouri, long known for its influential journalism and progressive editorial stance.
  • 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_69a2e8004cb88190b92ed1add6abf41a completed Feb. 28, 2026, 1:05 p.m.
NER Named-entity recognition batch_69a2ec8d0ca881909d786e8eed9b6748 completed Feb. 28, 2026, 1:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69a40ad94f88819082f718548331037b completed March 1, 2026, 9:46 a.m.
NEDg Description generation batch_69a40cdbc3d48190be0716621ded5942 completed March 1, 2026, 9:54 a.m.
NED2 Entity disambiguation (via description) batch_69a40d3376648190aca839b9a56d4edd completed March 1, 2026, 9:56 a.m.
Created at: Feb. 28, 2026, 1:08 p.m.