Triple
T22295650
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Cercanías Madrid Line C-4 |
E551111
|
entity |
| Predicate | usesInfrastructure |
P6820
|
FINISHED |
| Object |
Madrid north–south rail tunnel
The Madrid north–south rail tunnel is a key underground railway corridor that carries commuter and regional trains beneath central Madrid, linking major stations and improving north–south connectivity across the city.
|
E1530373
|
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: Madrid north–south rail tunnel | Statement: [Cercanías Madrid Line C-4, usesInfrastructure, Madrid north–south rail tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Madrid north–south rail tunnel Context triple: [Cercanías Madrid Line C-4, usesInfrastructure, Madrid north–south rail tunnel]
-
A.
Bielsa–Aragnouet tunnel
The Bielsa–Aragnouet tunnel is a road tunnel through the central Pyrenees that provides a key transboundary link between Spain and France.
-
B.
Madrid–Andalusia railway
The Madrid–Andalusia railway is a major rail line in Spain that connects the capital, Madrid, with the southern region of Andalusia, serving as a key corridor for both passenger and freight transport.
-
C.
Canfranc rail tunnel
The Canfranc rail tunnel is a historic trans-Pyrenean railway tunnel linking Spain and France near the Canfranc International railway station.
-
D.
Gaviota Tunnel
Gaviota Tunnel is a highway tunnel in Santa Barbara County, California, that carries U.S. Route 101 through the Gaviota Pass along the Pacific coast.
-
E.
Madrid–Barcelona railway
The Madrid–Barcelona railway is a major Spanish rail line linking the capital Madrid with the northeastern city of Barcelona, serving as one of the country’s principal passenger and freight corridors.
- 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: Madrid north–south rail tunnel Triple: [Cercanías Madrid Line C-4, usesInfrastructure, Madrid north–south rail tunnel]
Generated description
The Madrid north–south rail tunnel is a key underground railway corridor that carries commuter and regional trains beneath central Madrid, linking major stations and improving north–south connectivity across the city.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Madrid north–south rail tunnel Target entity description: The Madrid north–south rail tunnel is a key underground railway corridor that carries commuter and regional trains beneath central Madrid, linking major stations and improving north–south connectivity across the city.
-
A.
Bielsa–Aragnouet tunnel
The Bielsa–Aragnouet tunnel is a road tunnel through the central Pyrenees that provides a key transboundary link between Spain and France.
-
B.
Madrid–Andalusia railway
The Madrid–Andalusia railway is a major rail line in Spain that connects the capital, Madrid, with the southern region of Andalusia, serving as a key corridor for both passenger and freight transport.
-
C.
Canfranc rail tunnel
The Canfranc rail tunnel is a historic trans-Pyrenean railway tunnel linking Spain and France near the Canfranc International railway station.
-
D.
Gaviota Tunnel
Gaviota Tunnel is a highway tunnel in Santa Barbara County, California, that carries U.S. Route 101 through the Gaviota Pass along the Pacific coast.
-
E.
Madrid–Barcelona railway
The Madrid–Barcelona railway is a major Spanish rail line linking the capital Madrid with the northeastern city of Barcelona, serving as one of the country’s principal passenger and freight corridors.
- 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_69e11e45fb848190a1b2ae21296e3a5f |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f1571fe76c8190a40b3679802a5475 |
completed | April 29, 2026, 12:56 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0acc93e998819089abacc92564f923 |
completed | May 18, 2026, 8:23 a.m. |
| NEDg | Description generation | batch_6a0ad07a0f3c819092e329bfdef42349 |
completed | May 18, 2026, 8:40 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0ad0eb2a6481908cf174ed6f88c635 |
completed | May 18, 2026, 8:42 a.m. |
Created at: April 16, 2026, 8:41 p.m.