Triple
T2939115
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union City, California |
E79340
|
entity |
| Predicate | hasFacility |
P105
|
FINISHED |
| Object |
Union City BART station
Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
|
E314435
|
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: Union City BART station | Statement: [Union City, California, hasFacility, Union City BART station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union City BART station Context triple: [Union City, California, hasFacility, Union City BART station]
-
A.
Rockridge BART station
Rockridge BART station is an elevated rapid transit station in Oakland, California, serving the Rockridge neighborhood on the Bay Area Rapid Transit system.
-
B.
Lake Merritt BART station
Lake Merritt BART station is an underground Bay Area Rapid Transit station in Oakland, California, serving the Lake Merritt neighborhood and nearby civic and residential areas.
-
C.
Civic Center/UN Plaza BART station
Civic Center/UN Plaza BART station is a major underground Bay Area Rapid Transit and Muni Metro hub serving San Francisco’s Civic Center area near City Hall and the United Nations Plaza.
-
D.
MacArthur BART station
MacArthur BART station is a major Bay Area Rapid Transit hub in Oakland, California, serving as a key transfer point for multiple lines and regional commuters.
-
E.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
- 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: Union City BART station Triple: [Union City, California, hasFacility, Union City BART station]
Generated description
Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Union City BART station Target entity description: Union City BART station is a Bay Area Rapid Transit rail station in Union City, California, serving as a key public transit hub for commuters in the East Bay.
-
A.
Rockridge BART station
Rockridge BART station is an elevated rapid transit station in Oakland, California, serving the Rockridge neighborhood on the Bay Area Rapid Transit system.
-
B.
Lake Merritt BART station
Lake Merritt BART station is an underground Bay Area Rapid Transit station in Oakland, California, serving the Lake Merritt neighborhood and nearby civic and residential areas.
-
C.
Civic Center/UN Plaza BART station
Civic Center/UN Plaza BART station is a major underground Bay Area Rapid Transit and Muni Metro hub serving San Francisco’s Civic Center area near City Hall and the United Nations Plaza.
-
D.
MacArthur BART station
MacArthur BART station is a major Bay Area Rapid Transit hub in Oakland, California, serving as a key transfer point for multiple lines and regional commuters.
-
E.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
- 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_69ad8b0fbab081908f6a61567c045d8d |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad986d9a248190927efc1a0c7d247f |
completed | March 8, 2026, 3:40 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b0fc7063dc819086ae9280d060313e |
completed | March 11, 2026, 5:24 a.m. |
| NEDg | Description generation | batch_69b0fd07b82881908d52ab2db2f2e54c |
completed | March 11, 2026, 5:26 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b0fdba0fd88190a2e760f1770e846c |
completed | March 11, 2026, 5:29 a.m. |
Created at: March 8, 2026, 2:56 p.m.