Triple
T1745871
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metro Vancouver |
E38333
|
entity |
| Predicate | rapidTransitSystem |
P32065
|
FINISHED |
| Object |
SkyTrain
SkyTrain is an automated, driverless rapid transit system serving the Metro Vancouver region in British Columbia, Canada.
|
E198011
|
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: SkyTrain | Statement: [Metro Vancouver, rapidTransitSystem, SkyTrain]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SkyTrain Context triple: [Metro Vancouver, rapidTransitSystem, SkyTrain]
-
A.
SkyTrain Expo Line
The SkyTrain Expo Line is a major rapid transit line in Metro Vancouver, British Columbia, forming part of the SkyTrain system and connecting downtown Vancouver with surrounding municipalities including Burnaby, New Westminster, and Surrey.
-
B.
SkyTrain Millennium Line
The SkyTrain Millennium Line is a rapid transit line in Metro Vancouver, British Columbia, forming part of the region’s automated SkyTrain system and connecting several municipalities including Burnaby.
-
C.
BTS Skytrain
The BTS Skytrain is an elevated rapid transit system that serves as one of Bangkok’s primary urban rail networks, helping alleviate traffic congestion and connect key commercial and residential areas across the city.
-
D.
Metro Rail
Metro Rail is the urban rapid transit rail system serving Los Angeles County, providing light rail and subway services across the region.
-
E.
AeroTrain
AeroTrain is an automated underground people mover system that transports passengers between terminals at Washington Dulles International Airport.
- 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: SkyTrain Triple: [Metro Vancouver, rapidTransitSystem, SkyTrain]
Generated description
SkyTrain is an automated, driverless rapid transit system serving the Metro Vancouver region in British Columbia, Canada.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SkyTrain Target entity description: SkyTrain is an automated, driverless rapid transit system serving the Metro Vancouver region in British Columbia, Canada.
-
A.
SkyTrain Expo Line
The SkyTrain Expo Line is a major rapid transit line in Metro Vancouver, British Columbia, forming part of the SkyTrain system and connecting downtown Vancouver with surrounding municipalities including Burnaby, New Westminster, and Surrey.
-
B.
SkyTrain Millennium Line
The SkyTrain Millennium Line is a rapid transit line in Metro Vancouver, British Columbia, forming part of the region’s automated SkyTrain system and connecting several municipalities including Burnaby.
-
C.
BTS Skytrain
The BTS Skytrain is an elevated rapid transit system that serves as one of Bangkok’s primary urban rail networks, helping alleviate traffic congestion and connect key commercial and residential areas across the city.
-
D.
Metro Rail
Metro Rail is the urban rapid transit rail system serving Los Angeles County, providing light rail and subway services across the region.
-
E.
AeroTrain
AeroTrain is an automated underground people mover system that transports passengers between terminals at Washington Dulles International Airport.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: rapidTransitSystem Context triple: [Metro Vancouver, rapidTransitSystem, SkyTrain]
-
A.
partOfTransitSystem
Indicates that something is a component or segment within a larger transit or transportation system.
-
B.
hasLightRailSystem
Indicates that a place possesses and operates a light rail transit system.
-
C.
subwayServices
Indicates that one entity provides or operates subway transportation services for another entity or area.
-
D.
commuterRailMode
Indicates that the relationship involves travel or transportation specifically by commuter rail as the mode of transit between the related entities.
-
E.
hasTramway
Indicates that a location or area is served by, contains, or is connected to a tramway system.
- F. None of above. chosen
Provenance (7 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_69a8862b01a48190ab47209063af82d9 |
completed | March 4, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69ab630e7d008190a8c673665d9672bb |
completed | March 6, 2026, 11:28 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ada9866d308190a1de483f5a330362 |
completed | March 8, 2026, 4:53 p.m. |
| NEDg | Description generation | batch_69adaab3b5008190ba5a07636fe3f2eb |
completed | March 8, 2026, 4:58 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69adaea486d0819097357d881b70d114 |
completed | March 8, 2026, 5:15 p.m. |
| PD | Predicate disambiguation | batch_69aa61c5a18481909bc49e0c54d64314 |
completed | March 6, 2026, 5:10 a.m. |
| PDg | Predicate description generation | batch_69ab630cb34881908c9fb7ed5dedcd77 |
completed | March 6, 2026, 11:28 p.m. |
Created at: March 4, 2026, 7:31 p.m.