Triple
T19117183
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Line 4 (Seoul Metropolitan Subway) |
E467935
|
entity |
| Predicate | hasRollingStock |
P1305
|
FINISHED |
| Object |
Seoul Metro 4000 series trains
The Seoul Metro 4000 series trains are electric multiple units operating on Seoul Subway Line 4, known for serving as a primary fleet for this north–south rapid transit corridor in the Seoul metropolitan area.
|
E1359238
|
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: Seoul Metro 4000 series trains | Statement: [Line 4 (Seoul Metropolitan Subway), hasRollingStock, Seoul Metro 4000 series trains]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Seoul Metro 4000 series trains Context triple: [Line 4 (Seoul Metropolitan Subway), hasRollingStock, Seoul Metro 4000 series trains]
-
A.
Seoul Subway Line 4
Seoul Subway Line 4 is a major north–south rapid transit line in the Seoul Metropolitan Subway system, connecting central districts like Jongno-gu with outlying areas and key hubs such as Sadang, Suwon, and Danggogae.
-
B.
Daejeon Metro
Daejeon Metro is the urban rapid transit system serving the city of Daejeon in South Korea.
-
C.
Daegu Metro
Daegu Metro is the urban rapid transit system serving the city of Daegu in South Korea, providing high-capacity rail transportation across the metropolitan area.
-
D.
Seoul Metropolitan Subway
The Seoul Metropolitan Subway is an extensive rapid transit network serving Seoul and its surrounding metropolitan area, known for its high efficiency, cleanliness, and technological sophistication.
-
E.
Uijeongbu Light Rail Transit
Uijeongbu Light Rail Transit is an automated light metro system serving the city of Uijeongbu in Gyeonggi Province, South Korea.
- 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: Seoul Metro 4000 series trains Triple: [Line 4 (Seoul Metropolitan Subway), hasRollingStock, Seoul Metro 4000 series trains]
Generated description
The Seoul Metro 4000 series trains are electric multiple units operating on Seoul Subway Line 4, known for serving as a primary fleet for this north–south rapid transit corridor in the Seoul metropolitan area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Seoul Metro 4000 series trains Target entity description: The Seoul Metro 4000 series trains are electric multiple units operating on Seoul Subway Line 4, known for serving as a primary fleet for this north–south rapid transit corridor in the Seoul metropolitan area.
-
A.
Seoul Subway Line 4
Seoul Subway Line 4 is a major north–south rapid transit line in the Seoul Metropolitan Subway system, connecting central districts like Jongno-gu with outlying areas and key hubs such as Sadang, Suwon, and Danggogae.
-
B.
Daejeon Metro
Daejeon Metro is the urban rapid transit system serving the city of Daejeon in South Korea.
-
C.
Daegu Metro
Daegu Metro is the urban rapid transit system serving the city of Daegu in South Korea, providing high-capacity rail transportation across the metropolitan area.
-
D.
Seoul Metropolitan Subway
The Seoul Metropolitan Subway is an extensive rapid transit network serving Seoul and its surrounding metropolitan area, known for its high efficiency, cleanliness, and technological sophistication.
-
E.
Uijeongbu Light Rail Transit
Uijeongbu Light Rail Transit is an automated light metro system serving the city of Uijeongbu in Gyeonggi Province, South Korea.
- 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_69d8dd06a26481908039e2a1bae8c597 |
completed | April 10, 2026, 11:20 a.m. |
| NER | Named-entity recognition | batch_69e5e399a6d8819090a9501ff1637b9d |
completed | April 20, 2026, 8:28 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a05e671f2988190a74d53989124026b |
completed | May 14, 2026, 3:12 p.m. |
| NEDg | Description generation | batch_6a05e9406ba48190a50f4ea6b413e1f4 |
completed | May 14, 2026, 3:24 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a05e9c0d35081909b6ce3c287af5d5f |
completed | May 14, 2026, 3:26 p.m. |
Created at: April 10, 2026, 12:05 p.m.