Triple
T19117406
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | U Line |
E467940
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Uijeongbu Light Rail Transit Co., Ltd. |
—
|
NE NERFINISHED |
How this triple was built (3 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: Uijeongbu Light Rail Transit Co., Ltd. | Statement: [U Line, operator, Uijeongbu Light Rail Transit Co., Ltd.]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Uijeongbu Light Rail Transit Co., Ltd. Context triple: [U Line, operator, Uijeongbu Light Rail Transit Co., Ltd.]
-
A.
Daegu Metropolitan Transit Corporation
Daegu Metropolitan Transit Corporation is the public company responsible for operating and managing the urban rail transit system in Daegu, South Korea.
-
B.
Incheon Transit Corporation
Incheon Transit Corporation is a public transportation company responsible for operating and managing the urban rail network in Incheon, South Korea.
-
C.
Busan Transportation Corporation
Busan Transportation Corporation is the public company responsible for operating and managing the Busan Metro system in Busan, South Korea.
-
D.
Gyeonggi Railroad Co., Ltd.
Gyeonggi Railroad Co., Ltd. is a South Korean railway company responsible for operating segments of the Seoul Metropolitan Subway network.
-
E.
Seoul Metro Line 9 Corporation
Seoul Metro Line 9 Corporation is the company responsible for operating and managing services on Seoul Subway Line 9, one of the major urban rail lines in Seoul, South Korea.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Uijeongbu Light Rail Transit Co., Ltd. Target entity description: Uijeongbu Light Rail Transit Co., Ltd. is the company responsible for operating the U Line light metro system serving the city of Uijeongbu in South Korea.
-
A.
Daegu Metropolitan Transit Corporation
Daegu Metropolitan Transit Corporation is the public company responsible for operating and managing the urban rail transit system in Daegu, South Korea.
-
B.
Incheon Transit Corporation
Incheon Transit Corporation is a public transportation company responsible for operating and managing the urban rail network in Incheon, South Korea.
-
C.
Busan Transportation Corporation
Busan Transportation Corporation is the public company responsible for operating and managing the Busan Metro system in Busan, South Korea.
-
D.
Gyeonggi Railroad Co., Ltd.
Gyeonggi Railroad Co., Ltd. is a South Korean railway company responsible for operating segments of the Seoul Metropolitan Subway network.
-
E.
Seoul Metro Line 9 Corporation
Seoul Metro Line 9 Corporation is the company responsible for operating and managing services on Seoul Subway Line 9, one of the major urban rail lines in Seoul, South Korea.
- F. None of above. chosen
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_69d8dd06a26481908039e2a1bae8c597 |
completed | April 10, 2026, 11:20 a.m. |
| NER | Named-entity recognition | batch_69e5e399a6d8819090a9501ff1637b9d |
completed | April 20, 2026, 8:28 a.m. |
Created at: April 10, 2026, 12:05 p.m.