Triple
T21674929
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Cairo Metro |
E534942
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | National Authority for Tunnels |
—
|
NE NERFINISHED |
How this triple was built (2 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: National Authority for Tunnels | Statement: [Cairo Metro, operator, National Authority for Tunnels]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: National Authority for Tunnels Context triple: [Cairo Metro, operator, National Authority for Tunnels]
-
A.
Egyptian National Authority for Tunnels
chosen
The Egyptian National Authority for Tunnels is a government agency responsible for planning, constructing, and managing Egypt’s major tunnel and urban rail projects, including metro and rapid transit systems.
-
B.
South Axis tunnel
The South Axis tunnel is a major rail tunnel in Amsterdam that carries train traffic beneath the Zuidas business district, connecting through Amsterdam Zuid station.
-
C.
Zimmerberg Base Tunnel
The Zimmerberg Base Tunnel is a major Swiss railway tunnel that provides a fast, low-gradient route for passenger and freight trains between Zurich and central Switzerland.
-
D.
Sitina Tunnel
Sitina Tunnel is a major road tunnel in Bratislava, Slovakia, forming part of the city’s key motorway connection and easing traffic flow in the western part of the capital.
-
E.
Schuman–Josaphat tunnel
The Schuman–Josaphat tunnel is a railway tunnel in Brussels that connects the city’s European Quarter with the northern rail network, improving regional and international train links.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0c46898008190aa618a4af55bd1ee |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69ef8a0ed5388190b8f1932fb3f11c6a |
completed | April 27, 2026, 4:08 p.m. |
Created at: April 16, 2026, 6:41 p.m.