Triple
T20067278
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Islamic Republic of Iran Railways |
E499639
|
entity |
| Predicate | hasMainStation |
P1071
|
FINISHED |
| Object |
Tehran railway station
Tehran railway station is the central rail hub of Iran’s capital city, serving as a major national and regional transportation gateway.
|
E1410446
|
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: Tehran railway station | Statement: [Islamic Republic of Iran Railways, hasMainStation, Tehran railway station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tehran railway station Context triple: [Islamic Republic of Iran Railways, hasMainStation, Tehran railway station]
-
A.
Tehran Metro Shah Abdol-Azim station
Tehran Metro Shah Abdol-Azim station is a metro station in Tehran serving passengers visiting the historic Shah Abdol-Azim Shrine and the surrounding Rey district.
-
B.
Mashhad railway station
Mashhad railway station is a major rail transport hub in Mashhad, Iran, serving as one of the country’s busiest passenger terminals and a key gateway to the city’s religious and commercial centers.
-
C.
Shahid Sattari station
Shahid Sattari station is a passenger station on Tehran Metro’s Line 6 serving commuters in its surrounding area of the city.
-
D.
Shariati station
Shariati station is a metro station on the Mashhad Metro system in Mashhad, Iran, serving as a local public transit stop for commuters in the city.
-
E.
Vakilabad station
Vakilabad station is a metro station in Mashhad, Iran, serving as one of the key stops on the Mashhad Metro network.
- 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: Tehran railway station Triple: [Islamic Republic of Iran Railways, hasMainStation, Tehran railway station]
Generated description
Tehran railway station is the central rail hub of Iran’s capital city, serving as a major national and regional transportation gateway.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tehran railway station Target entity description: Tehran railway station is the central rail hub of Iran’s capital city, serving as a major national and regional transportation gateway.
-
A.
Tehran Metro Shah Abdol-Azim station
Tehran Metro Shah Abdol-Azim station is a metro station in Tehran serving passengers visiting the historic Shah Abdol-Azim Shrine and the surrounding Rey district.
-
B.
Mashhad railway station
Mashhad railway station is a major rail transport hub in Mashhad, Iran, serving as one of the country’s busiest passenger terminals and a key gateway to the city’s religious and commercial centers.
-
C.
Shahid Sattari station
Shahid Sattari station is a passenger station on Tehran Metro’s Line 6 serving commuters in its surrounding area of the city.
-
D.
Shariati station
Shariati station is a metro station on the Mashhad Metro system in Mashhad, Iran, serving as a local public transit stop for commuters in the city.
-
E.
Vakilabad station
Vakilabad station is a metro station in Mashhad, Iran, serving as one of the key stops on the Mashhad Metro network.
- 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_69da627770948190997f486f9a2e370f |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e66379f2cc81908f13a7b216878f12 |
completed | April 20, 2026, 5:33 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a081f3acb7881908e23b1d066c35051 |
completed | May 16, 2026, 7:39 a.m. |
| NEDg | Description generation | batch_6a081fbb7f208190a032f9f312fd07de |
completed | May 16, 2026, 7:41 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a08208c203c819083abea34d10d5e4e |
completed | May 16, 2026, 7:45 a.m. |
Created at: April 11, 2026, 3:39 p.m.