Triple
T13537024
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | U4 |
E323286
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
U4 train (Frankfurt rolling stock)
The U4 train is a type of electric multiple unit used on the Frankfurt U-Bahn system, known for its high-floor design and service on several urban rapid transit lines in Frankfurt, Germany.
|
E1046638
|
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: U4 train (Frankfurt rolling stock) | Statement: [U4, usesRollingStock, U4 train (Frankfurt rolling stock)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: U4 train (Frankfurt rolling stock) Context triple: [U4, usesRollingStock, U4 train (Frankfurt rolling stock)]
-
A.
U5 train (Frankfurt U-Bahn)
The U5 train of the Frankfurt U-Bahn is a type of light rail vehicle used for urban rapid transit services on several lines in Frankfurt, Germany.
-
B.
Siemens-Duewag U2
The Siemens-Duewag U2 is a high-floor light rail vehicle widely used in North American transit systems, notably in early expansions of Calgary’s CTrain network.
-
C.
Nuremberg U-Bahn DT2 trains
Nuremberg U-Bahn DT2 trains are an older generation of electric multiple-unit subway trains that formerly operated on the Nuremberg U-Bahn system in Germany.
-
D.
Siemens Viaggio Next Level trainsets
Siemens Viaggio Next Level trainsets are modern, long-distance passenger trains developed by Siemens Mobility, known for their comfort-focused design and use in next-generation European night train services.
-
E.
Siemens Desiro
Siemens Desiro is a family of modern diesel and electric multiple-unit trains widely used for regional and commuter rail services across Europe and beyond.
- 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: U4 train (Frankfurt rolling stock) Triple: [U4, usesRollingStock, U4 train (Frankfurt rolling stock)]
Generated description
The U4 train is a type of electric multiple unit used on the Frankfurt U-Bahn system, known for its high-floor design and service on several urban rapid transit lines in Frankfurt, Germany.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: U4 train (Frankfurt rolling stock) Target entity description: The U4 train is a type of electric multiple unit used on the Frankfurt U-Bahn system, known for its high-floor design and service on several urban rapid transit lines in Frankfurt, Germany.
-
A.
U5 train (Frankfurt U-Bahn)
The U5 train of the Frankfurt U-Bahn is a type of light rail vehicle used for urban rapid transit services on several lines in Frankfurt, Germany.
-
B.
Siemens-Duewag U2
The Siemens-Duewag U2 is a high-floor light rail vehicle widely used in North American transit systems, notably in early expansions of Calgary’s CTrain network.
-
C.
Nuremberg U-Bahn DT2 trains
Nuremberg U-Bahn DT2 trains are an older generation of electric multiple-unit subway trains that formerly operated on the Nuremberg U-Bahn system in Germany.
-
D.
Siemens Viaggio Next Level trainsets
Siemens Viaggio Next Level trainsets are modern, long-distance passenger trains developed by Siemens Mobility, known for their comfort-focused design and use in next-generation European night train services.
-
E.
Siemens Desiro
Siemens Desiro is a family of modern diesel and electric multiple-unit trains widely used for regional and commuter rail services across Europe and beyond.
- 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_69d8076776248190bdf0d4fa1f85a5fc |
completed | April 9, 2026, 8:09 p.m. |
| NER | Named-entity recognition | batch_69dbafbe39948190808062d4eff91841 |
completed | April 12, 2026, 2:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f75d9a448c81908fa57a909a9097f7 |
completed | May 3, 2026, 2:37 p.m. |
| NEDg | Description generation | batch_69f75e7d8970819092116ae7a769ac21 |
completed | May 3, 2026, 2:41 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69f75f35c6008190b88e14feddb93a1d |
completed | May 3, 2026, 2:44 p.m. |
Created at: April 9, 2026, 9:45 p.m.