Triple
T15574322
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Twin Peaks Tunnel |
E374328
|
entity |
| Predicate | hasStation |
P35
|
FINISHED |
| Object |
West Portal Station
West Portal Station is a San Francisco Muni Metro light rail station located at the western entrance of the Twin Peaks Tunnel in the West Portal neighborhood.
|
E1165292
|
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: West Portal Station | Statement: [Twin Peaks Tunnel, hasStation, West Portal Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: West Portal Station Context triple: [Twin Peaks Tunnel, hasStation, West Portal Station]
-
A.
46th Street Station
46th Street Station is a light rail stop in Minneapolis, Minnesota, serving passengers on the METRO Blue Line.
-
B.
Riverside station
Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
-
C.
Riverside station
Riverside station is a commuter rail stop on the Metro-North Railroad’s New Haven Line serving the Riverside neighborhood of Greenwich, Connecticut.
-
D.
Blaustein station
Blaustein station is a local railway stop serving the town of Blaustein in the state of Baden-Württemberg, Germany.
-
E.
Palo Alto station
Palo Alto station is a major commuter rail stop in Palo Alto, California, serving as a key hub on the Caltrain line between San Francisco and San Jose.
- 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: West Portal Station Triple: [Twin Peaks Tunnel, hasStation, West Portal Station]
Generated description
West Portal Station is a San Francisco Muni Metro light rail station located at the western entrance of the Twin Peaks Tunnel in the West Portal neighborhood.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: West Portal Station Target entity description: West Portal Station is a San Francisco Muni Metro light rail station located at the western entrance of the Twin Peaks Tunnel in the West Portal neighborhood.
-
A.
46th Street Station
46th Street Station is a light rail stop in Minneapolis, Minnesota, serving passengers on the METRO Blue Line.
-
B.
Riverside station
Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
-
C.
Riverside station
Riverside station is a commuter rail stop on the Metro-North Railroad’s New Haven Line serving the Riverside neighborhood of Greenwich, Connecticut.
-
D.
Blaustein station
Blaustein station is a local railway stop serving the town of Blaustein in the state of Baden-Württemberg, Germany.
-
E.
Palo Alto station
Palo Alto station is a major commuter rail stop in Palo Alto, California, serving as a key hub on the Caltrain line between San Francisco and San Jose.
- 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_69d85ccd575081908909b71a3f3e3a61 |
completed | April 10, 2026, 2:13 a.m. |
| NER | Named-entity recognition | batch_69e04e2140388190a8df7b835eaa72ce |
completed | April 16, 2026, 2:49 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ff4c4767e48190a180062688cdc245 |
completed | May 9, 2026, 3:01 p.m. |
| NEDg | Description generation | batch_69ff507a84c081909ab592497be644fb |
completed | May 9, 2026, 3:19 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ff50f653f48190ae5bd6fcb5665041 |
completed | May 9, 2026, 3:21 p.m. |
Created at: April 10, 2026, 4:10 a.m.