Triple

T10416057
Position Surface form Disambiguated ID Type / Status
Subject Pittsburgh Regional Transit E245518 entity
Predicate shortName P43 FINISHED
Object PRT
PRT is the primary public transportation agency serving the Pittsburgh, Pennsylvania metropolitan area, operating buses, light rail, and other transit services.
 E862256 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: PRT | Statement: [Pittsburgh Regional Transit, shortName, PRT]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: PRT
Context triple: [Pittsburgh Regional Transit, shortName, PRT]
  • A. PRT
    PRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Portugal.
  • B. PRTC
    PRTC is a public transit agency serving Northern Virginia with commuter and local bus services.
  • C. PRTC
    PRTC stands for Primary Reference Time Clock, a highly accurate timing source used in telecommunications networks to provide traceable time and phase synchronization.
  • D. PRTC
    PRTC was a leftist Salvadoran guerrilla organization that became one of the constituent groups of the Farabundo Martí National Liberation Front (FMLN) during El Salvador’s civil war.
  • E. PTP
    PTP is a standardized protocol used to transfer digital images from cameras and other imaging devices to computers and other hosts.
  • 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: PRT
Triple: [Pittsburgh Regional Transit, shortName, PRT]
Generated description
PRT is the primary public transportation agency serving the Pittsburgh, Pennsylvania metropolitan area, operating buses, light rail, and other transit services.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: PRT
Target entity description: PRT is the primary public transportation agency serving the Pittsburgh, Pennsylvania metropolitan area, operating buses, light rail, and other transit services.
  • A. PRT
    PRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Portugal.
  • B. PRTC
    PRTC was a leftist Salvadoran guerrilla organization that became one of the constituent groups of the Farabundo Martí National Liberation Front (FMLN) during El Salvador’s civil war.
  • C. PRTC
    PRTC is a public transit agency serving Northern Virginia with commuter and local bus services.
  • D. PRTC
    PRTC stands for Primary Reference Time Clock, a highly accurate timing source used in telecommunications networks to provide traceable time and phase synchronization.
  • E. PTP
    PTP is a standardized protocol used to transfer digital images from cameras and other imaging devices to computers and other hosts.
  • 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_69d381be340c8190b05998703d42d224 completed April 6, 2026, 9:49 a.m.
NER Named-entity recognition batch_69d4ea108fec8190819423630888fa2b completed April 7, 2026, 11:27 a.m.
NED1 Entity disambiguation (via context triple) batch_69d7fc0dd480819082edcc49a245ad4f completed April 9, 2026, 7:20 p.m.
NEDg Description generation batch_69d822d6a0188190a7ee6de5aab50486 completed April 9, 2026, 10:06 p.m.
NED2 Entity disambiguation (via description) batch_69d859e40bf88190a6dc8deed3049d31 completed April 10, 2026, 2:01 a.m.
Created at: April 6, 2026, 12:10 p.m.