Triple

T1394731
Position Surface form Disambiguated ID Type / Status
Subject Amsterdam Metro line 51 E30638 entity
Predicate servedCorridor P2566 FINISHED
Object Amstelveenlijn
Amstelveenlijn is a light rail corridor in the Amsterdam metropolitan area connecting the city with the suburb of Amstelveen.
E167444 NE FINISHED

How this triple was built (5 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: Amstelveenlijn | Statement: [Amsterdam Metro line 51, servedCorridor, Amstelveenlijn]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Amstelveenlijn
Context triple: [Amsterdam Metro line 51, servedCorridor, Amstelveenlijn]
  • A. Weesp–Leiden railway
    The Weesp–Leiden railway is a key rail line in the Netherlands connecting the Amsterdam area with Leiden and serving as an important corridor in the Randstad region’s passenger rail network.
  • B. Eindhoven–Nijmegen–Arnhem corridor
    The Eindhoven–Nijmegen–Arnhem corridor is a strategically important region in the southern and eastern Netherlands, encompassing a chain of cities and river crossings that has served as a key transportation and military axis.
  • C. Amsterdam–Eindhoven railway corridor
    The Amsterdam–Eindhoven railway corridor is a major Dutch rail axis connecting the capital Amsterdam with the southern city of Eindhoven, serving as a key route for both intercity and regional train services.
  • D. Westphalweg
    Westphalweg is a station on Berlin’s U6 U-Bahn line serving the Tempelhof-Schöneberg district in the southern part of the city.
  • E. Amsterdam–Haarlem–Rotterdam railway
    The Amsterdam–Haarlem–Rotterdam railway is one of the Netherlands’ oldest and most important mainline rail routes, connecting major cities in the Randstad region.
  • 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: Amstelveenlijn
Triple: [Amsterdam Metro line 51, servedCorridor, Amstelveenlijn]
Generated description
Amstelveenlijn is a light rail corridor in the Amsterdam metropolitan area connecting the city with the suburb of Amstelveen.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Amstelveenlijn
Target entity description: Amstelveenlijn is a light rail corridor in the Amsterdam metropolitan area connecting the city with the suburb of Amstelveen.
  • A. Weesp–Leiden railway
    The Weesp–Leiden railway is a key rail line in the Netherlands connecting the Amsterdam area with Leiden and serving as an important corridor in the Randstad region’s passenger rail network.
  • B. Eindhoven–Nijmegen–Arnhem corridor
    The Eindhoven–Nijmegen–Arnhem corridor is a strategically important region in the southern and eastern Netherlands, encompassing a chain of cities and river crossings that has served as a key transportation and military axis.
  • C. Amsterdam–Eindhoven railway corridor
    The Amsterdam–Eindhoven railway corridor is a major Dutch rail axis connecting the capital Amsterdam with the southern city of Eindhoven, serving as a key route for both intercity and regional train services.
  • D. Westphalweg
    Westphalweg is a station on Berlin’s U6 U-Bahn line serving the Tempelhof-Schöneberg district in the southern part of the city.
  • E. Amsterdam–Haarlem–Rotterdam railway
    The Amsterdam–Haarlem–Rotterdam railway is one of the Netherlands’ oldest and most important mainline rail routes, connecting major cities in the Randstad region.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: servedCorridor
Context triple: [Amsterdam Metro line 51, servedCorridor, Amstelveenlijn]
  • A. hasCorridor
    Indicates that one entity includes, is connected by, or provides access through a corridor to another entity.
  • B. hasServiceOnCorridor chosen
    Indicates that a service operates along, or is provided on, a specific corridor or route.
  • C. numberOfCorridors
    Indicates the total count of corridors associated with or contained within a given entity or structure.
  • D. lengthOfCorridors
    Indicates the measured extent or distance of corridors within a given space or structure.
  • E. lineServed
    Indicates that a particular transportation line (such as a bus, train, or metro line) provides service to or is operated at a given stop, station, or route segment.
  • F. None of above.

Provenance (6 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_69a498fd4e408190bd73eca30ea9754c completed March 1, 2026, 7:52 p.m.
NER Named-entity recognition batch_69a4c37e60388190a8efcb345be7a1b9 completed March 1, 2026, 10:53 p.m.
NED1 Entity disambiguation (via context triple) batch_69ad0e657d3c8190962220e52e3e64c0 completed March 8, 2026, 5:51 a.m.
NEDg Description generation batch_69ad0f2b046081908be111f16e2de0fb completed March 8, 2026, 5:54 a.m.
NED2 Entity disambiguation (via description) batch_69ad0fe782548190a437386ee2f4c2d5 completed March 8, 2026, 5:57 a.m.
PD Predicate disambiguation batch_69a4bf017f8081908572121560ec621f completed March 1, 2026, 10:34 p.m.
Created at: March 1, 2026, 7:59 p.m.