Triple
T17403290
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | BART Fremont line |
E423149
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object | BART C car |
—
|
NE NERFINISHED |
Named-entity recognition
Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.
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 C car | Statement: [BART Fremont line, usesRollingStock, BART C car]
Disambiguation candidates (1 decision)
The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BART C car Context triple: [BART Fremont line, usesRollingStock, BART C car]
-
A.
BART C2 cars
chosen
BART C2 cars are a later-generation series of Bay Area Rapid Transit rail vehicles designed to expand and modernize the system’s electric multiple-unit fleet.
-
B.
BART A/2 cars
BART A/2 cars are an early-generation series of electric multiple unit railcars used on the San Francisco Bay Area Rapid Transit system.
-
C.
BART
BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
-
D.
BART
BART is a sequence-to-sequence transformer model developed by Facebook AI for tasks like text generation, summarization, and translation.
-
E.
BART at Balboa Park station
BART at Balboa Park station is a Bay Area Rapid Transit stop in San Francisco that serves as a key transfer point between regional rail and local Muni Metro lines.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 batches)
| Stage | Batch ID | Job type | Status |
|---|---|---|---|
| creating | batch_69d889d7d27c819088486ce3f0627fa1 |
elicitation | completed |
| NER | batch_69e43b051cc48190872278ee0b52240d |
ner | completed |
Created at: April 10, 2026, 5:45 a.m.