Triple

T4178937
Position Surface form Disambiguated ID Type / Status
Subject MBTA diesel locomotives E86545 entity
Predicate hasModel P2390 FINISHED
Object GP40MC
The GP40MC is a rebuilt diesel-electric locomotive model used primarily for commuter rail service, notably by the Massachusetts Bay Transportation Authority (MBTA).
 E419692 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: GP40MC | Statement: [MBTA diesel locomotives, hasModel, GP40MC]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: GP40MC
Context triple: [MBTA diesel locomotives, hasModel, GP40MC]
  • A. GP40PH-2
    The GP40PH-2 is a rebuilt passenger diesel-electric locomotive, derived from the EMD GP40 freight design and equipped with head-end power for commuter rail service.
  • B. G6 GT
    The G6 GT is a sport-oriented trim of the Pontiac G6 midsize car, offering upgraded performance and features over the base model.
  • C. Mark VII Limited
    Mark VII Limited was a television and film production company founded by Jack Webb, best known for producing the police procedural series Dragnet.
  • D. Grand Prix GXP
    The Grand Prix GXP is a high-performance, V8-powered sport sedan variant of the Pontiac Grand Prix, featuring upgraded handling, styling, and equipment.
  • E. GA 400
    GA 400 is a major north–south freeway in Georgia that connects downtown Atlanta with its northern suburbs and exurbs.
  • 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: GP40MC
Triple: [MBTA diesel locomotives, hasModel, GP40MC]
Generated description
The GP40MC is a rebuilt diesel-electric locomotive model used primarily for commuter rail service, notably by the Massachusetts Bay Transportation Authority (MBTA).
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: GP40MC
Target entity description: The GP40MC is a rebuilt diesel-electric locomotive model used primarily for commuter rail service, notably by the Massachusetts Bay Transportation Authority (MBTA).
  • A. GP40PH-2
    The GP40PH-2 is a rebuilt passenger diesel-electric locomotive, derived from the EMD GP40 freight design and equipped with head-end power for commuter rail service.
  • B. G6 GT
    The G6 GT is a sport-oriented trim of the Pontiac G6 midsize car, offering upgraded performance and features over the base model.
  • C. Mark VII Limited
    Mark VII Limited was a television and film production company founded by Jack Webb, best known for producing the police procedural series Dragnet.
  • D. Grand Prix GXP
    The Grand Prix GXP is a high-performance, V8-powered sport sedan variant of the Pontiac Grand Prix, featuring upgraded handling, styling, and equipment.
  • E. GA 400
    GA 400 is a major north–south freeway in Georgia that connects downtown Atlanta with its northern suburbs and exurbs.
  • 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_69aed93de98c8190ad838ce507b77c8a completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af030114c88190b725908a32ace750 completed March 9, 2026, 5:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69b589f5864881909c9fc787dd9b2341 completed March 14, 2026, 4:16 p.m.
NEDg Description generation batch_69b58a81af5481908ad8fe2c7925cb99 completed March 14, 2026, 4:19 p.m.
NED2 Entity disambiguation (via description) batch_69b58b6ee40c8190a3e93f03a66df1b2 completed March 14, 2026, 4:23 p.m.
Created at: March 9, 2026, 3:45 p.m.