Triple

T20530826
Position Surface form Disambiguated ID Type / Status
Subject Southern Pacific GS-4 E504061 entity
Predicate fleetNumbers P44071 FINISHED
Object SP 4441
SP 4441 is a Southern Pacific GS-4 class streamlined steam locomotive that operated in high-speed passenger service in the mid-20th century American West.
 E1438869 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: SP 4441 | Statement: [Southern Pacific GS-4, fleetNumbers, SP 4441]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: SP 4441
Context triple: [Southern Pacific GS-4, fleetNumbers, SP 4441]
  • A. SP 4440
    SP 4440 is a Southern Pacific GS-4 class streamlined steam locomotive that served in passenger service in the mid-20th century.
  • B. SP 4439
    SP 4439 is a specific Southern Pacific GS-4 class streamlined steam locomotive that once hauled high-speed passenger trains in the western United States.
  • C. SP 4450
    SP 4450 is a specific Southern Pacific GS-4 class streamlined steam locomotive that operated in passenger service for the Southern Pacific Railroad.
  • D. SP 4245
    SP 4245 is a Southern Pacific Railroad EMD AC-11 class articulated steam locomotive, part of a series of powerful cab-forward engines used primarily for heavy freight service over mountainous routes.
  • E. SP 4271
    SP 4271 is a Southern Pacific Railroad locomotive, preserved as part of the railroad’s historic diesel-electric fleet.
  • 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: SP 4441
Triple: [Southern Pacific GS-4, fleetNumbers, SP 4441]
Generated description
SP 4441 is a Southern Pacific GS-4 class streamlined steam locomotive that operated in high-speed passenger service in the mid-20th century American West.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: SP 4441
Target entity description: SP 4441 is a Southern Pacific GS-4 class streamlined steam locomotive that operated in high-speed passenger service in the mid-20th century American West.
  • A. SP 4440
    SP 4440 is a Southern Pacific GS-4 class streamlined steam locomotive that served in passenger service in the mid-20th century.
  • B. SP 4439
    SP 4439 is a specific Southern Pacific GS-4 class streamlined steam locomotive that once hauled high-speed passenger trains in the western United States.
  • C. SP 4450
    SP 4450 is a specific Southern Pacific GS-4 class streamlined steam locomotive that operated in passenger service for the Southern Pacific Railroad.
  • D. SP 4245
    SP 4245 is a Southern Pacific Railroad EMD AC-11 class articulated steam locomotive, part of a series of powerful cab-forward engines used primarily for heavy freight service over mountainous routes.
  • E. SP 4271
    SP 4271 is a Southern Pacific Railroad locomotive, preserved as part of the railroad’s historic diesel-electric fleet.
  • 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_69e0b4b3a6e08190ae663701f50fab8e completed April 16, 2026, 10:06 a.m.
NER Named-entity recognition batch_69e6a06b923c81908ba24be6645a7c61 completed April 20, 2026, 9:53 p.m.
NED1 Entity disambiguation (via context triple) batch_6a08acd38254819083f2afd27675d7a6 completed May 16, 2026, 5:43 p.m.
NEDg Description generation batch_6a08ae05c00c819087e9cc9201be12bc completed May 16, 2026, 5:48 p.m.
NED2 Entity disambiguation (via description) batch_6a08aec256988190bc43a1f784a458ec completed May 16, 2026, 5:52 p.m.
Created at: April 16, 2026, 11:37 a.m.