Triple

T3025979
Position Surface form Disambiguated ID Type / Status
Subject Colombo–Matara railway line E82574 entity
Predicate hasStation P35 FINISHED
Object Maradana railway station
Maradana railway station is a major railway hub in Colombo, Sri Lanka, serving as one of the city’s primary junctions connecting multiple key lines across the country.
 E327703 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: Maradana railway station | Statement: [Colombo–Matara railway line, hasStation, Maradana railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Maradana railway station
Context triple: [Colombo–Matara railway line, hasStation, Maradana railway station]
  • A. Galle railway station
    Galle railway station is a major coastal rail hub in southern Sri Lanka, serving the historic city of Galle and connecting it with key destinations including Colombo and Matara.
  • B. Colombo Fort railway station
    Colombo Fort railway station is the main railway hub in Colombo, Sri Lanka, serving as a central junction for both suburban and long-distance train services across the country.
  • C. Matara railway station
    Matara railway station is a major railway terminus in southern Sri Lanka serving the city of Matara and connecting it to Colombo and other parts of the country.
  • D. Bentota railway station
    Bentota railway station is a coastal train station in Sri Lanka serving the resort town of Bentota on the country’s southern railway corridor.
  • E. Colombo–Matara railway line
    The Colombo–Matara railway line is a coastal rail route in southwestern Sri Lanka that connects the capital region with major southern cities, including Galle and Matara.
  • 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: Maradana railway station
Triple: [Colombo–Matara railway line, hasStation, Maradana railway station]
Generated description
Maradana railway station is a major railway hub in Colombo, Sri Lanka, serving as one of the city’s primary junctions connecting multiple key lines across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Maradana railway station
Target entity description: Maradana railway station is a major railway hub in Colombo, Sri Lanka, serving as one of the city’s primary junctions connecting multiple key lines across the country.
  • A. Galle railway station
    Galle railway station is a major coastal rail hub in southern Sri Lanka, serving the historic city of Galle and connecting it with key destinations including Colombo and Matara.
  • B. Colombo Fort railway station
    Colombo Fort railway station is the main railway hub in Colombo, Sri Lanka, serving as a central junction for both suburban and long-distance train services across the country.
  • C. Matara railway station
    Matara railway station is a major railway terminus in southern Sri Lanka serving the city of Matara and connecting it to Colombo and other parts of the country.
  • D. Bentota railway station
    Bentota railway station is a coastal train station in Sri Lanka serving the resort town of Bentota on the country’s southern railway corridor.
  • E. Colombo–Matara railway line
    The Colombo–Matara railway line is a coastal rail route in southwestern Sri Lanka that connects the capital region with major southern cities, including Galle and Matara.
  • 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_69ad8b1fb34081908c1b873e2b7273e1 completed March 8, 2026, 2:43 p.m.
NER Named-entity recognition batch_69ad9abc78b48190a5283e7407a78fe7 completed March 8, 2026, 3:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69b2034727808190b016223c8ac911c3 completed March 12, 2026, 12:05 a.m.
NEDg Description generation batch_69b20563abdc8190a51e1cfbcc6e0075 completed March 12, 2026, 12:14 a.m.
NED2 Entity disambiguation (via description) batch_69b205f1b3c08190a63fd9494dc8aee8 completed March 12, 2026, 12:16 a.m.
Created at: March 8, 2026, 3 p.m.