Triple
T274549
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tehran |
E5216
|
entity |
| Predicate | hasPublicTransportSystem |
P474
|
FINISHED |
| Object |
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.
|
E35854
|
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 Metro | Statement: [Tehran, hasPublicTransportSystem, Tehran Metro]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tehran Metro Context triple: [Tehran, hasPublicTransportSystem, Tehran Metro]
-
A.
Dubai Metro
The Dubai Metro is a fully automated, driverless urban rail network that serves as a major public transportation backbone across key areas of Dubai.
-
B.
Moscow Metro
The Moscow Metro is a major rapid transit system in Moscow renowned for its extensive network, high passenger capacity, and ornately decorated stations often likened to underground palaces.
-
C.
Beijing Subway
The Beijing Subway is one of the world’s largest and busiest rapid transit systems, forming the backbone of public transportation in China’s capital city.
-
D.
Dubai Tram
Dubai Tram is a modern light rail transit system serving key residential and commercial areas along Dubai’s Al Sufouh and Marina districts.
-
E.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
- 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 Metro Triple: [Tehran, hasPublicTransportSystem, Tehran Metro]
Generated description
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tehran Metro Target entity description: Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
A.
Dubai Metro
The Dubai Metro is a fully automated, driverless urban rail network that serves as a major public transportation backbone across key areas of Dubai.
-
B.
Moscow Metro
The Moscow Metro is a major rapid transit system in Moscow renowned for its extensive network, high passenger capacity, and ornately decorated stations often likened to underground palaces.
-
C.
Beijing Subway
The Beijing Subway is one of the world’s largest and busiest rapid transit systems, forming the backbone of public transportation in China’s capital city.
-
D.
Dubai Tram
Dubai Tram is a modern light rail transit system serving key residential and commercial areas along Dubai’s Al Sufouh and Marina districts.
-
E.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
- 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_69a257e6c8788190987dfe705ca2912a |
completed | Feb. 28, 2026, 2:50 a.m. |
| NER | Named-entity recognition | batch_69a25dd1cdf881909c2c9b77b7f88684 |
completed | Feb. 28, 2026, 3:15 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a391506e2881909fa399aab00d3ac9 |
completed | March 1, 2026, 1:07 a.m. |
| NEDg | Description generation | batch_69a391bb35bc8190b0c84968c156439b |
completed | March 1, 2026, 1:09 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a39217ae2c819082fef73a105edf7d |
completed | March 1, 2026, 1:10 a.m. |
Created at: Feb. 28, 2026, 2:59 a.m.