Triple
T22262797
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Port Authority light rail |
E550270
|
entity |
| Predicate | replaced |
P101
|
FINISHED |
| Object | Pittsburgh streetcar network |
—
|
NE NERFINISHED |
How this triple was built (2 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: Pittsburgh streetcar network | Statement: [Port Authority light rail, replaced, Pittsburgh streetcar network]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh streetcar network Context triple: [Port Authority light rail, replaced, Pittsburgh streetcar network]
-
A.
Pittsburgh streetcar system
chosen
The Pittsburgh streetcar system was an extensive urban and suburban electric tram network that once served as a primary mode of public transportation in and around Pittsburgh, Pennsylvania.
-
B.
Erie streetcar system
The Erie streetcar system was a historic electric trolley network that provided urban public transportation in Erie, Pennsylvania during the late 19th and early 20th centuries.
-
C.
Pittsburgh Light Rail
Pittsburgh Light Rail is a light rail transit system serving Pittsburgh, Pennsylvania and its nearby neighborhoods, providing urban and commuter rail service including access to the city’s North Shore district.
-
D.
Wilkes-Barre streetcar system
The Wilkes-Barre streetcar system was an early 20th-century electric urban and interurban trolley network serving Wilkes-Barre, Pennsylvania, and its surrounding communities.
-
E.
Scranton streetcar system
The Scranton streetcar system was an early 20th-century electric trolley network that provided urban and interurban public transit in and around Scranton, Pennsylvania.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e11e42adb8819087714772ea606709 |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f141b94a688190b17c55477993a745 |
completed | April 28, 2026, 11:24 p.m. |
Created at: April 16, 2026, 8:39 p.m.