Triple
T11737101
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Colma station |
E279057
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object |
BART Pittsburg/Bay Point–SFO/Millbrae line
The BART Pittsburg/Bay Point–SFO/Millbrae line is a Bay Area Rapid Transit route in the San Francisco Bay Area that connects eastern Contra Costa County with San Francisco, San Francisco International Airport, and Millbrae.
|
E808890
|
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: BART Pittsburg/Bay Point–SFO/Millbrae line | Statement: [Colma station, railwayLine, BART Pittsburg/Bay Point–SFO/Millbrae line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BART Pittsburg/Bay Point–SFO/Millbrae line Context triple: [Colma station, railwayLine, BART Pittsburg/Bay Point–SFO/Millbrae line]
-
A.
BART Antioch–SFO+Millbrae line
The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
-
B.
BART Richmond–Millbrae+SFO line
The BART Richmond–Millbrae+SFO line is a Bay Area Rapid Transit route that runs from Richmond in the East Bay through Oakland and San Francisco to Millbrae and San Francisco International Airport.
-
C.
BART Fremont line
The BART Fremont line is a Bay Area Rapid Transit route in the San Francisco Bay Area that historically extended service to the city of Fremont in southern Alameda County.
-
D.
BART Blue Line
The BART Blue Line is a Bay Area Rapid Transit service route that runs through San Francisco and the greater Bay Area, connecting key urban centers and regional destinations.
-
E.
BART Pittsburg/Bay Point line (historical)
The BART Pittsburg/Bay Point line (historical) was a former Bay Area Rapid Transit service route connecting San Francisco and Oakland to the eastern Contra Costa County suburbs, including Pittsburg and Bay Point.
- 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: BART Pittsburg/Bay Point–SFO/Millbrae line Triple: [Colma station, railwayLine, BART Pittsburg/Bay Point–SFO/Millbrae line]
Generated description
The BART Pittsburg/Bay Point–SFO/Millbrae line is a Bay Area Rapid Transit route in the San Francisco Bay Area that connects eastern Contra Costa County with San Francisco, San Francisco International Airport, and Millbrae.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: BART Pittsburg/Bay Point–SFO/Millbrae line Target entity description: The BART Pittsburg/Bay Point–SFO/Millbrae line is a Bay Area Rapid Transit route in the San Francisco Bay Area that connects eastern Contra Costa County with San Francisco, San Francisco International Airport, and Millbrae.
-
A.
BART Antioch–SFO+Millbrae line
The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
-
B.
BART Richmond–Millbrae+SFO line
The BART Richmond–Millbrae+SFO line is a Bay Area Rapid Transit route that runs from Richmond in the East Bay through Oakland and San Francisco to Millbrae and San Francisco International Airport.
-
C.
BART Fremont line
The BART Fremont line is a Bay Area Rapid Transit route in the San Francisco Bay Area that historically extended service to the city of Fremont in southern Alameda County.
-
D.
BART Blue Line
The BART Blue Line is a Bay Area Rapid Transit service route that runs through San Francisco and the greater Bay Area, connecting key urban centers and regional destinations.
-
E.
BART Pittsburg/Bay Point line (historical)
chosen
The BART Pittsburg/Bay Point line (historical) was a former Bay Area Rapid Transit service route connecting San Francisco and Oakland to the eastern Contra Costa County suburbs, including Pittsburg and Bay Point.
- 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_69d6aaffec6881908bead509e8621742 |
completed | April 8, 2026, 7:22 p.m. |
| NER | Named-entity recognition | batch_69d8a4ef1c4881909ad36dc27b1fe193 |
completed | April 10, 2026, 7:21 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f019b318188190bfb7effcf42974d2 |
completed | April 28, 2026, 2:21 a.m. |
| NEDg | Description generation | batch_69f0319520dc8190817c5e75ddb7d40b |
completed | April 28, 2026, 4:03 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69f05aa351888190a31092e6a9aee26b |
completed | April 28, 2026, 6:58 a.m. |
Created at: April 8, 2026, 9:41 p.m.