Triple

T16458943
Position Surface form Disambiguated ID Type / Status
Subject D10 E399754 entity
Predicate notationSystem P6517 FINISHED
Object WMATA internal station coding
WMATA internal station coding is a system of alphanumeric identifiers used by the Washington Metropolitan Area Transit Authority to uniquely label and manage its Metrorail stations.
 E1214732 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: WMATA internal station coding | Statement: [D10, notationSystem, WMATA internal station coding]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: WMATA internal station coding
Context triple: [D10, notationSystem, WMATA internal station coding]
  • A. Washington Metro system stations
    The Washington Metro system stations are the distinctive Brutalist-style underground and above-ground transit stations in the U.S. capital region, renowned for their coffered concrete vaults and cohesive modernist design.
  • B. Silver Line (Washington Metro) stations
    Silver Line (Washington Metro) stations are the passenger rail stops served by the Silver Line of the Washington, D.C. Metrorail system, primarily connecting downtown Washington with northern Virginia suburbs and Dulles International Airport.
  • C. Red Line (Washington Metro) stations
    Red Line (Washington Metro) stations are the passenger rail stops served by the Red Line of the Washington, D.C. Metrorail rapid transit system.
  • D. Washington Metro Blue Line stations
    Washington Metro Blue Line stations are the network of rapid transit stops in the Washington, D.C. metropolitan area served by the Blue Line of the Washington Metro system.
  • E. Washington Metro Orange Line stations
    Washington Metro Orange Line stations are the network of rapid transit stops in the Washington, D.C. area served by the system’s Orange Line, connecting key downtown, suburban, and regional destinations.
  • 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: WMATA internal station coding
Triple: [D10, notationSystem, WMATA internal station coding]
Generated description
WMATA internal station coding is a system of alphanumeric identifiers used by the Washington Metropolitan Area Transit Authority to uniquely label and manage its Metrorail stations.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: WMATA internal station coding
Target entity description: WMATA internal station coding is a system of alphanumeric identifiers used by the Washington Metropolitan Area Transit Authority to uniquely label and manage its Metrorail stations.
  • A. Washington Metro system stations
    The Washington Metro system stations are the distinctive Brutalist-style underground and above-ground transit stations in the U.S. capital region, renowned for their coffered concrete vaults and cohesive modernist design.
  • B. Silver Line (Washington Metro) stations
    Silver Line (Washington Metro) stations are the passenger rail stops served by the Silver Line of the Washington, D.C. Metrorail system, primarily connecting downtown Washington with northern Virginia suburbs and Dulles International Airport.
  • C. Red Line (Washington Metro) stations
    Red Line (Washington Metro) stations are the passenger rail stops served by the Red Line of the Washington, D.C. Metrorail rapid transit system.
  • D. Washington Metro Blue Line stations
    Washington Metro Blue Line stations are the network of rapid transit stops in the Washington, D.C. metropolitan area served by the Blue Line of the Washington Metro system.
  • E. Washington Metro Orange Line stations
    Washington Metro Orange Line stations are the network of rapid transit stops in the Washington, D.C. area served by the system’s Orange Line, connecting key downtown, suburban, and regional destinations.
  • 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_69d87f2dac988190b74d6e185fa88ba4 completed April 10, 2026, 4:40 a.m.
NER Named-entity recognition batch_69e32d7ff0e881909100bb5b33c04291 completed April 18, 2026, 7:06 a.m.
NED1 Entity disambiguation (via context triple) batch_6a004f51d93081909ede0adcf8e604d4 completed May 10, 2026, 9:26 a.m.
NEDg Description generation batch_6a004fb5c28c81909da3d7b9b5c2be72 completed May 10, 2026, 9:28 a.m.
NED2 Entity disambiguation (via description) batch_6a00504d177c8190b4a4b4202d0167bb completed May 10, 2026, 9:30 a.m.
Created at: April 10, 2026, 5:10 a.m.