Triple
T3409088
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | METRO Green Line |
E71845
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
Siemens S70 light rail vehicles
Siemens S70 light rail vehicles are modern, low-floor electric streetcars widely used in North American light rail systems for urban passenger transit.
|
E53255
|
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: Siemens S70 light rail vehicles | Statement: [METRO Green Line, usesRollingStock, Siemens S70 light rail vehicles]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Siemens S70 light rail vehicles Context triple: [METRO Green Line, usesRollingStock, Siemens S70 light rail vehicles]
-
A.
Siemens P2000 light rail vehicles
Siemens P2000 light rail vehicles are a fleet of electric light rail cars built by Siemens for use on Los Angeles Metro Rail lines.
-
B.
Siemens S700 light rail vehicles
Siemens S700 light rail vehicles are modern low-floor light rail cars designed by Siemens Mobility for urban transit systems, featuring improved accessibility, energy efficiency, and passenger comfort.
-
C.
Siemens modular metro trains
Siemens modular metro trains are a family of customizable, electric multiple-unit metro vehicles designed by Siemens for urban rapid transit systems.
-
D.
Siemens S200 (Muni LRV4)
The Siemens S200 (Muni LRV4) is a modern low-floor light rail vehicle used by San Francisco’s Muni Metro system for improved reliability, accessibility, and passenger comfort.
-
E.
Stadler Tango trams
Stadler Tango trams are modern, low-floor light rail vehicles built by Stadler Rail, commonly used in European cities for high-capacity, urban public transport services.
- 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: Siemens S70 light rail vehicles Triple: [METRO Green Line, usesRollingStock, Siemens S70 light rail vehicles]
Generated description
Siemens S70 light rail vehicles are modern, low-floor electric streetcars widely used in North American light rail systems for urban passenger transit.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Siemens S70 light rail vehicles Target entity description: Siemens S70 light rail vehicles are modern, low-floor electric streetcars widely used in North American light rail systems for urban passenger transit.
-
A.
Siemens P2000 light rail vehicles
Siemens P2000 light rail vehicles are a fleet of electric light rail cars built by Siemens for use on Los Angeles Metro Rail lines.
-
B.
Siemens S700 light rail vehicles
chosen
Siemens S700 light rail vehicles are modern low-floor light rail cars designed by Siemens Mobility for urban transit systems, featuring improved accessibility, energy efficiency, and passenger comfort.
-
C.
Siemens modular metro trains
Siemens modular metro trains are a family of customizable, electric multiple-unit metro vehicles designed by Siemens for urban rapid transit systems.
-
D.
Siemens S200 (Muni LRV4)
The Siemens S200 (Muni LRV4) is a modern low-floor light rail vehicle used by San Francisco’s Muni Metro system for improved reliability, accessibility, and passenger comfort.
-
E.
Stadler Tango trams
Stadler Tango trams are modern, low-floor light rail vehicles built by Stadler Rail, commonly used in European cities for high-capacity, urban public transport services.
- F. None of above.
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_69ad85ac312481909e7027ced1456a9f |
completed | March 8, 2026, 2:20 p.m. |
| NER | Named-entity recognition | batch_69adb90754788190ab85e2bec020f99e |
completed | March 8, 2026, 5:59 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b34bdd99248190823875cae2531609 |
completed | March 12, 2026, 11:27 p.m. |
| NEDg | Description generation | batch_69b34e486c3c81908e73c5b75baf119c |
completed | March 12, 2026, 11:37 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69b34fc420b08190baee678721b1b32c |
completed | March 12, 2026, 11:44 p.m. |
Created at: March 8, 2026, 3:15 p.m.