Triple
T8876188
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line (SEPTA) |
E211290
|
entity |
| Predicate | usesTunnel |
P18707
|
FINISHED |
| Object | Subway–Surface Tunnel |
E389399
|
NE FINISHED |
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: Subway–Surface Tunnel | Statement: [Green Line (SEPTA), usesTunnel, Subway–Surface Tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Subway–Surface Tunnel Context triple: [Green Line (SEPTA), usesTunnel, Subway–Surface Tunnel]
-
A.
Subway–Surface tunnel
chosen
The Subway–Surface tunnel is an underground transit corridor in Philadelphia that carries several SEPTA trolley lines between West Philadelphia and Center City as part of the city’s light rail network.
-
B.
Hudson–Bergen light rail tunnels
The Hudson–Bergen light rail tunnels are a set of underground passages in northeastern New Jersey that carry the Hudson–Bergen Light Rail system beneath the Hudson River waterfront and surrounding urban areas.
-
C.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
D.
City Tunnel No. 3
City Tunnel No. 3 is a major New York City water supply tunnel that conveys drinking water from upstate reservoirs to the city’s distribution system.
-
E.
Center City Tunnel
Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ca838e78748190934d82db3104f855 |
completed | March 30, 2026, 2:07 p.m. |
| NER | Named-entity recognition | batch_69cc61472cc081909e51b4a35a20ef43 |
completed | April 1, 2026, 12:05 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cfaba6f2f481909a30f71e96bc9079 |
completed | April 3, 2026, 11:59 a.m. |
Created at: March 30, 2026, 6:52 p.m.