Triple
T17175346
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Siemens-Duewag U2 |
E416844
|
entity |
| Predicate | usedInTransportSystem |
P941
|
FINISHED |
| Object | Stadtbahn Rhein-Erft |
—
|
NE ONNED1 |
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: Stadtbahn Rhein-Erft | Statement: [Siemens-Duewag U2, usedInTransportSystem, Stadtbahn Rhein-Erft]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Stadtbahn Rhein-Erft Context triple: [Siemens-Duewag U2, usedInTransportSystem, Stadtbahn Rhein-Erft]
-
A.
Stadtbahn Rhein-Sieg
Stadtbahn Rhein-Sieg is a light rail and tram network serving the Cologne/Bonn metropolitan region in Germany as part of the local public transport system.
-
B.
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.
-
C.
Stadtbahn Rhein-Haardt
Stadtbahn Rhein-Haardt is a regional light rail/tramway system in southwestern Germany that connects cities in the Rhine-Neckar area.
-
D.
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.
-
E.
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.
- 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: Stadtbahn Rhein-Erft Target entity description: Stadtbahn Rhein-Erft is a regional light rail system serving the Rhein-Erft district in North Rhine-Westphalia, Germany.
-
A.
Stadtbahn Rhein-Sieg
Stadtbahn Rhein-Sieg is a light rail and tram network serving the Cologne/Bonn metropolitan region in Germany as part of the local public transport system.
-
B.
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.
-
C.
Stadtbahn Rhein-Haardt
Stadtbahn Rhein-Haardt is a regional light rail/tramway system in southwestern Germany that connects cities in the Rhine-Neckar area.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Provenance (3 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_6a0195428c6c8190a11e3f7c8f6796fe |
in_progress | May 11, 2026, 8:37 a.m. |
Created at: April 10, 2026, 5:37 a.m.