Triple
T17175334
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Siemens-Duewag U2 |
E416844
|
entity |
| Predicate | usedInTransportSystem |
P941
|
FINISHED |
| Object |
Stadtbahn Essen
Stadtbahn Essen is a light rail and rapid transit network serving the city of Essen and parts of the Ruhr area in Germany.
|
E1256868
|
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: Stadtbahn Essen | Statement: [Siemens-Duewag U2, usedInTransportSystem, Stadtbahn Essen]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Stadtbahn Essen Context triple: [Siemens-Duewag U2, usedInTransportSystem, Stadtbahn Essen]
-
A.
Dortmund Stadtbahn
The Dortmund Stadtbahn is a light rail and rapid transit network serving the city of Dortmund and its surrounding areas in Germany.
-
B.
Stadtbahn Duisburg
Stadtbahn Duisburg is a light rail and tram system serving the city of Duisburg, Germany, as part of the Rhine-Ruhr urban transit network.
-
C.
Cologne Stadtbahn
The Cologne Stadtbahn is a light rail and rapid transit network serving Cologne and its surrounding region, integrating underground and surface lines for urban and suburban transportation.
-
D.
Stadtbahn Bochum
Stadtbahn Bochum is a light rail transit network serving the cities of Bochum and Herne in Germany as part of the Rhine-Ruhr urban rail system.
-
E.
Stadtbahn Rhein-Ruhr
The Stadtbahn Rhein-Ruhr is a light rail and rapid transit network serving multiple cities in Germany’s densely populated Rhine-Ruhr metropolitan region.
- 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: Stadtbahn Essen Triple: [Siemens-Duewag U2, usedInTransportSystem, Stadtbahn Essen]
Generated description
Stadtbahn Essen is a light rail and rapid transit network serving the city of Essen and parts of the Ruhr area in Germany.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Stadtbahn Essen Target entity description: Stadtbahn Essen is a light rail and rapid transit network serving the city of Essen and parts of the Ruhr area in Germany.
-
A.
Dortmund Stadtbahn
The Dortmund Stadtbahn is a light rail and rapid transit network serving the city of Dortmund and its surrounding areas in Germany.
-
B.
Stadtbahn Duisburg
Stadtbahn Duisburg is a light rail and tram system serving the city of Duisburg, Germany, as part of the Rhine-Ruhr urban transit network.
-
C.
Cologne Stadtbahn
The Cologne Stadtbahn is a light rail and rapid transit network serving Cologne and its surrounding region, integrating underground and surface lines for urban and suburban transportation.
-
D.
Stadtbahn Bochum
Stadtbahn Bochum is a light rail transit network serving the cities of Bochum and Herne in Germany as part of the Rhine-Ruhr urban rail system.
-
E.
Stadtbahn Rhein-Ruhr
The Stadtbahn Rhein-Ruhr is a light rail and rapid transit network serving multiple cities in Germany’s densely populated Rhine-Ruhr metropolitan region.
- 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_69d886d5f34c8190b24564dfaa63f3fb |
completed | April 10, 2026, 5:12 a.m. |
| NER | Named-entity recognition | batch_69e3fc0cec448190b30466628a2ff23f |
completed | April 18, 2026, 9:47 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a016747a8908190a7ce1408abc70c47 |
completed | May 11, 2026, 5:21 a.m. |
| NEDg | Description generation | batch_6a016838367c8190b5117d5314f71a16 |
completed | May 11, 2026, 5:25 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0168976af88190a5f839a93538ac6f |
completed | May 11, 2026, 5:26 a.m. |
Created at: April 10, 2026, 5:37 a.m.