Triple
T13432551
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mashhad Metro |
E313647
|
entity |
| Predicate | owner |
P347
|
FINISHED |
| Object |
Mashhad Urban Railway Organization
Mashhad Urban Railway Organization is the municipal authority responsible for planning, operating, and managing the urban rail transit system in Mashhad, Iran.
|
E313647
|
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: Mashhad Urban Railway Organization | Statement: [Mashhad Metro, owner, Mashhad Urban Railway Organization]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mashhad Urban Railway Organization Context triple: [Mashhad Metro, owner, Mashhad Urban Railway Organization]
-
A.
Mashhad Metro
Mashhad Metro is the urban rapid transit system serving the city of Mashhad in northeastern Iran, providing high-capacity public transportation across the metropolitan area.
-
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.
Karaj Metro
Karaj Metro is an urban rapid transit system serving the city of Karaj in Iran, providing high-capacity rail transportation for commuters.
-
D.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
E.
Tehran Metro Line 9
Tehran Metro Line 9 is a planned rapid transit line intended to expand and improve the urban rail network in Iran’s capital, Tehran.
- 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: Mashhad Urban Railway Organization Triple: [Mashhad Metro, owner, Mashhad Urban Railway Organization]
Generated description
Mashhad Urban Railway Organization is the municipal authority responsible for planning, operating, and managing the urban rail transit system in Mashhad, Iran.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mashhad Urban Railway Organization Target entity description: Mashhad Urban Railway Organization is the municipal authority responsible for planning, operating, and managing the urban rail transit system in Mashhad, Iran.
-
A.
Mashhad Metro
chosen
Mashhad Metro is the urban rapid transit system serving the city of Mashhad in northeastern Iran, providing high-capacity public transportation across the metropolitan area.
-
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.
Karaj Metro
Karaj Metro is an urban rapid transit system serving the city of Karaj in Iran, providing high-capacity rail transportation for commuters.
-
D.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
E.
Tehran Metro Line 9
Tehran Metro Line 9 is a planned rapid transit line intended to expand and improve the urban rail network in Iran’s capital, Tehran.
- F. None of above.
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_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. |
| NEDg | Description generation | batch_69f73b065818819095d26633fc682546 |
completed | May 3, 2026, 12:09 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69f73b8635888190b31035bc72676b9d |
completed | May 3, 2026, 12:11 p.m. |
Created at: April 9, 2026, 9:40 p.m.