Triple
T5661496
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Downtown Palo Alto |
E124750
|
entity |
| Predicate | hasPublicTransitHub |
P2413
|
FINISHED |
| Object |
Palo Alto Caltrain Station
Palo Alto Caltrain Station is a major commuter rail station in Palo Alto, California, serving as a key transit hub for Caltrain services along the San Francisco Peninsula.
|
E537939
|
NE FINISHED |
How this triple was built (5 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: Palo Alto Caltrain Station | Statement: [Downtown Palo Alto, hasPublicTransitHub, Palo Alto Caltrain Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Palo Alto Caltrain Station Context triple: [Downtown Palo Alto, hasPublicTransitHub, Palo Alto Caltrain Station]
-
A.
Belmont Caltrain station
Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
-
B.
San Carlos Caltrain station
San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
-
C.
Broadway Caltrain station
Broadway Caltrain station is a commuter rail stop in Burlingame, California, serving passengers on Caltrain’s Peninsula Corridor between San Francisco and San Jose.
-
D.
San Bruno Caltrain station
San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
-
E.
Burlingame Caltrain station
Burlingame Caltrain station is a commuter rail station in Burlingame, California, served by Caltrain trains along the San Francisco Peninsula corridor.
- 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: Palo Alto Caltrain Station Triple: [Downtown Palo Alto, hasPublicTransitHub, Palo Alto Caltrain Station]
Generated description
Palo Alto Caltrain Station is a major commuter rail station in Palo Alto, California, serving as a key transit hub for Caltrain services along the San Francisco Peninsula.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Palo Alto Caltrain Station Target entity description: Palo Alto Caltrain Station is a major commuter rail station in Palo Alto, California, serving as a key transit hub for Caltrain services along the San Francisco Peninsula.
-
A.
Belmont Caltrain station
Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
-
B.
San Carlos Caltrain station
San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
-
C.
Broadway Caltrain station
Broadway Caltrain station is a commuter rail stop in Burlingame, California, serving passengers on Caltrain’s Peninsula Corridor between San Francisco and San Jose.
-
D.
San Bruno Caltrain station
San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
-
E.
Burlingame Caltrain station
Burlingame Caltrain station is a commuter rail station in Burlingame, California, served by Caltrain trains along the San Francisco Peninsula corridor.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasPublicTransitHub Context triple: [Downtown Palo Alto, hasPublicTransitHub, Palo Alto Caltrain Station]
-
A.
hasPublicTransitProvider
Indicates that a place or region is served by a specific public transit operating organization or agency.
-
B.
hasPublicTransitFunction
Indicates that something serves a role or provides a service related to public transportation operations or infrastructure.
-
C.
hasTransportHub
chosen
Indicates that a location contains or serves as a central facility where multiple transport routes or modes connect for passenger or cargo movement.
-
D.
hasPublicTransitMode
Indicates that a location, route, or service is associated with or supports a specific mode of public transportation (e.g., bus, train, tram).
-
E.
hasPublicTransitRoute
Indicates that there exists a public transportation route (such as a bus, train, or tram line) connecting or serving the related entities.
- F. None of above.
Provenance (6 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_69c0082774a481909d7e63fb2aad56ac |
completed | March 22, 2026, 3:17 p.m. |
| NER | Named-entity recognition | batch_69c0236d3f94819095111c41a323612d |
completed | March 22, 2026, 5:14 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c04da6fa808190a3c500ee664bb150 |
completed | March 22, 2026, 8:14 p.m. |
| NEDg | Description generation | batch_69c04edf30448190a60eda49b8b031a0 |
completed | March 22, 2026, 8:19 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c04fb62690819083327781cb857ccc |
completed | March 22, 2026, 8:23 p.m. |
| PD | Predicate disambiguation | batch_69c021ba4ec481909db8cdbf0e907dd6 |
completed | March 22, 2026, 5:07 p.m. |
Created at: March 22, 2026, 3:42 p.m.