Triple
T33386871
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Blue Line (St. Louis MetroLink) |
E854937
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
Siemens SD-400 light rail vehicles
The Siemens SD-400 light rail vehicles are a fleet of electric multiple-unit trains built by Siemens for use on North American light rail systems, known for their high-floor design and operation on networks such as the St. Louis MetroLink.
|
E2049836
|
NE FINISHED |
How this triple was built (2 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: Siemens SD-400 light rail vehicles | Statement: [Blue Line (St. Louis MetroLink), usesRollingStock, Siemens SD-400 light rail vehicles]
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: Siemens SD-400 light rail vehicles Triple: [Blue Line (St. Louis MetroLink), usesRollingStock, Siemens SD-400 light rail vehicles]
Generated description
The Siemens SD-400 light rail vehicles are a fleet of electric multiple-unit trains built by Siemens for use on North American light rail systems, known for their high-floor design and operation on networks such as the St. Louis MetroLink.
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_69f3496d54048190a1cb91fdd7caa6ea |
completed | April 30, 2026, 12:22 p.m. |
| NER | Named-entity recognition | batch_69f6e3e056648190a43a9a09544e8510 |
completed | May 3, 2026, 5:57 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a3576ee0be48190b40ebc470ce28937 |
completed | June 19, 2026, 5:05 p.m. |
| NEDg | Description generation | batch_6a35798096608190906a3fc52eeacf81 |
completed | June 19, 2026, 5:16 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a3579ded3688190aafe32273dda186b |
completed | June 19, 2026, 5:18 p.m. |
Created at: May 1, 2026, 1:35 a.m.