Triple

T12982778
Position Surface form Disambiguated ID Type / Status
Subject Matara railway station E321692 entity
Predicate hasStationCode P1289 FINISHED
Object MTR
MTR is the station code for Matara railway station, a key terminus on Sri Lanka’s coastal railway line.
 E1015555 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: MTR | Statement: [Matara railway station, hasStationCode, MTR]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MTR
Context triple: [Matara railway station, hasStationCode, MTR]
  • A. MTR urban lines
    MTR urban lines are a network of rapid transit railway services forming the core of Hong Kong’s mass transit system, particularly serving dense urban areas such as Kowloon.
  • B. MTR Nordic
    MTR Nordic is a Swedish public transport company that operates and manages rail and metro services, including the Stockholm metro, as part of the global MTR Corporation group.
  • C. MTR Tuen Ma line
    The MTR Tuen Ma line is a major heavy-rail metro line in Hong Kong that runs across the New Territories and Kowloon, connecting eastern and western districts through key residential and commercial areas.
  • D. MTR Light Rail
    MTR Light Rail is a local light rail transit system in Hong Kong’s northwestern New Territories, providing frequent, short-distance services that connect residential areas with major MTR heavy rail lines.
  • E. MTR Airport Express
    MTR Airport Express is a high-speed rail service in Hong Kong that links Hong Kong International Airport with the city’s urban rail network.
  • 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: MTR
Triple: [Matara railway station, hasStationCode, MTR]
Generated description
MTR is the station code for Matara railway station, a key terminus on Sri Lanka’s coastal railway line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: MTR
Target entity description: MTR is the station code for Matara railway station, a key terminus on Sri Lanka’s coastal railway line.
  • A. MTR urban lines
    MTR urban lines are a network of rapid transit railway services forming the core of Hong Kong’s mass transit system, particularly serving dense urban areas such as Kowloon.
  • B. MTR Nordic
    MTR Nordic is a Swedish public transport company that operates and manages rail and metro services, including the Stockholm metro, as part of the global MTR Corporation group.
  • C. MTR Tuen Ma line
    The MTR Tuen Ma line is a major heavy-rail metro line in Hong Kong that runs across the New Territories and Kowloon, connecting eastern and western districts through key residential and commercial areas.
  • D. MTR Light Rail
    MTR Light Rail is a local light rail transit system in Hong Kong’s northwestern New Territories, providing frequent, short-distance services that connect residential areas with major MTR heavy rail lines.
  • E. MTR Airport Express
    MTR Airport Express is a high-speed rail service in Hong Kong that links Hong Kong International Airport with the city’s urban rail network.
  • 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_69d8076479b8819090afce3591939cdf completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69d97e5ca33481909a6cb06c636889f9 completed April 10, 2026, 10:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6c0f95c548190a6fc2c1ea98246c3 completed May 3, 2026, 3:28 a.m.
NEDg Description generation batch_69f6c34532148190a0c609ff085e359c completed May 3, 2026, 3:38 a.m.
NED2 Entity disambiguation (via description) batch_69f6c3c6b240819099310f50cc7eabca completed May 3, 2026, 3:40 a.m.
Created at: April 9, 2026, 8:39 p.m.