Triple
T13233360
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | PCC streetcar |
E315076
|
entity |
| Predicate | influenced |
P9
|
FINISHED |
| Object |
Tatra T2 tram
The Tatra T2 tram is a mid-20th-century Czechoslovak streetcar model that adapted and localized the American PCC design for use across Eastern European urban transit systems.
|
E1029989
|
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: Tatra T2 tram | Statement: [PCC streetcar, influenced, Tatra T2 tram]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tatra T2 tram Context triple: [PCC streetcar, influenced, Tatra T2 tram]
-
A.
Tatra T1 tram
The Tatra T1 tram is an early postwar Czechoslovak streetcar model that adapted American PCC technology into a robust, standardized design widely used across Eastern Europe.
-
B.
Tatra T3 tram
The Tatra T3 tram is a widely produced and iconic Czechoslovakian streetcar model, renowned for its robust design and extensive use across Eastern Europe and the former Soviet bloc.
-
C.
Tatra K2 tram
The Tatra K2 tram is a high-capacity articulated tramcar of Czechoslovak design that has been widely used in several Central and Eastern European cities.
-
D.
Tatra KT8D5 tram
The Tatra KT8D5 tram is a high-floor, articulated tramcar model produced in Czechoslovakia in the 1980s, widely used in several Central and Eastern European cities.
-
E.
T-68 tram
The T-68 tram was a type of light rail vehicle used on Greater Manchester’s Metrolink system in the UK before being replaced by newer models.
- 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: Tatra T2 tram Triple: [PCC streetcar, influenced, Tatra T2 tram]
Generated description
The Tatra T2 tram is a mid-20th-century Czechoslovak streetcar model that adapted and localized the American PCC design for use across Eastern European urban transit systems.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tatra T2 tram Target entity description: The Tatra T2 tram is a mid-20th-century Czechoslovak streetcar model that adapted and localized the American PCC design for use across Eastern European urban transit systems.
-
A.
Tatra T1 tram
The Tatra T1 tram is an early postwar Czechoslovak streetcar model that adapted American PCC technology into a robust, standardized design widely used across Eastern Europe.
-
B.
Tatra T3 tram
The Tatra T3 tram is a widely produced and iconic Czechoslovakian streetcar model, renowned for its robust design and extensive use across Eastern Europe and the former Soviet bloc.
-
C.
Tatra K2 tram
The Tatra K2 tram is a high-capacity articulated tramcar of Czechoslovak design that has been widely used in several Central and Eastern European cities.
-
D.
Tatra KT8D5 tram
The Tatra KT8D5 tram is a high-floor, articulated tramcar model produced in Czechoslovakia in the 1980s, widely used in several Central and Eastern European cities.
-
E.
T-68 tram
The T-68 tram was a type of light rail vehicle used on Greater Manchester’s Metrolink system in the UK before being replaced by newer models.
- 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_69d806affc688190a25b6ccc588e9c72 |
completed | April 9, 2026, 8:06 p.m. |
| NER | Named-entity recognition | batch_69d98d34ff288190bdb550a019b7a470 |
completed | April 10, 2026, 11:52 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f70a35ccc88190881a7066b7af8fea |
completed | May 3, 2026, 8:41 a.m. |
| NEDg | Description generation | batch_69f70c000da081909297f3d24666b6a5 |
completed | May 3, 2026, 8:49 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69f70ce60a7081908f9498fcfec98e90 |
completed | May 3, 2026, 8:52 a.m. |
Created at: April 9, 2026, 9:22 p.m.