Triple

T2952756
Position Surface form Disambiguated ID Type / Status
Subject PCC streetcar E79857 entity
Predicate manufacturer P490 FINISHED
Object St. Louis Car Company
St. Louis Car Company was a prominent American rolling stock manufacturer known for producing streetcars, interurban cars, and railroad equipment throughout the late 19th and 20th centuries.
 E315080 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: St. Louis Car Company | Statement: [PCC streetcar, manufacturer, St. Louis Car Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: St. Louis Car Company
Context triple: [PCC streetcar, manufacturer, St. Louis Car Company]
  • A. Studebaker Corporation
    Studebaker Corporation was a historic American automobile manufacturer, originally a wagon maker, best known for its innovative car designs produced through the mid-20th century.
  • B. REO Motor Car Company
    REO Motor Car Company was an early 20th-century American automobile and truck manufacturer known for vehicles like the REO Speed Wagon and for helping establish the U.S. automotive industry.
  • C. Pullman Palace Car Company
    Pullman Palace Car Company was a prominent 19th-century American manufacturer and operator of luxury railroad sleeping cars, best known for its role in the landmark Pullman Strike of 1894.
  • D. Packard Motor Car Company
    Packard Motor Car Company was a prominent American luxury automobile manufacturer that also produced high-performance aircraft engines, especially during World War II.
  • E. J. B. Ford and Company
    J. B. Ford and Company was a 19th-century American publishing house known for issuing popular literary and religious works.
  • 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: St. Louis Car Company
Triple: [PCC streetcar, manufacturer, St. Louis Car Company]
Generated description
St. Louis Car Company was a prominent American rolling stock manufacturer known for producing streetcars, interurban cars, and railroad equipment throughout the late 19th and 20th centuries.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: St. Louis Car Company
Target entity description: St. Louis Car Company was a prominent American rolling stock manufacturer known for producing streetcars, interurban cars, and railroad equipment throughout the late 19th and 20th centuries.
  • A. Studebaker Corporation
    Studebaker Corporation was a historic American automobile manufacturer, originally a wagon maker, best known for its innovative car designs produced through the mid-20th century.
  • B. REO Motor Car Company
    REO Motor Car Company was an early 20th-century American automobile and truck manufacturer known for vehicles like the REO Speed Wagon and for helping establish the U.S. automotive industry.
  • C. Pullman Palace Car Company
    Pullman Palace Car Company was a prominent 19th-century American manufacturer and operator of luxury railroad sleeping cars, best known for its role in the landmark Pullman Strike of 1894.
  • D. Packard Motor Car Company
    Packard Motor Car Company was a prominent American luxury automobile manufacturer that also produced high-performance aircraft engines, especially during World War II.
  • E. J. B. Ford and Company
    J. B. Ford and Company was a 19th-century American publishing house known for issuing popular literary and religious works.
  • 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_69ad8b1276588190a374a0b12e0f7bdf completed March 8, 2026, 2:43 p.m.
NER Named-entity recognition batch_69ad98fe4b688190a0f68c4f80cd6f8f completed March 8, 2026, 3:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69b0fc82d1248190869beffffc0bf956 completed March 11, 2026, 5:24 a.m.
NEDg Description generation batch_69b0fd25e07c819088b2b1bcef4cf54e completed March 11, 2026, 5:27 a.m.
NED2 Entity disambiguation (via description) batch_69b100ecbee081908832ddec0efdc751 completed March 11, 2026, 5:43 a.m.
Created at: March 8, 2026, 2:57 p.m.