Triple
T13432500
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mashhad railway station |
E313646
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Islamic Republic of Iran Railways |
E499639
|
NE FINISHED |
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: Islamic Republic of Iran Railways | Statement: [Mashhad railway station, operator, Islamic Republic of Iran Railways]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Islamic Republic of Iran Railways Context triple: [Mashhad railway station, operator, Islamic Republic of Iran Railways]
-
A.
Islamic Republic of Iran Railways
chosen
Islamic Republic of Iran Railways is Iran’s state-owned national railway company responsible for operating and managing the country’s rail transport network.
-
B.
Tehran Urban and Suburban Railway and Bus Company
Tehran Urban and Suburban Railway and Bus Company is the municipal public transport operator responsible for managing Tehran’s metro and bus systems, including the city’s Bus Rapid Transit network.
-
C.
Tehran–IKIA railway connection
The Tehran–IKIA railway connection is a rail link that connects central Tehran with Imam Khomeini International Airport, providing a direct public transit option for air travelers.
-
D.
Tehran–Mashhad railway
The Tehran–Mashhad railway is a major Iranian rail line connecting the capital Tehran with the holy city of Mashhad, serving as one of the country’s busiest passenger and freight corridors.
-
E.
Tehran–Karaj suburban rail line
The Tehran–Karaj suburban rail line is a key commuter railway service connecting Iran’s capital Tehran with the nearby city of Karaj, helping to handle heavy daily passenger traffic across the metropolitan corridor.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d806ad0c44819088833ae1ec9e9690 |
completed | April 9, 2026, 8:06 p.m. |
| NER | Named-entity recognition | batch_69dbaed41a5481908800033303224adb |
completed | April 12, 2026, 2:40 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f7398da07081908c3eca6fc4213930 |
completed | May 3, 2026, 12:03 p.m. |
Created at: April 9, 2026, 9:40 p.m.