Triple
T14917421
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Horseshoe Curve National Historic Landmark |
E371415
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object | Norfolk Southern Pittsburgh Line |
E873988
|
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: Norfolk Southern Pittsburgh Line | Statement: [Horseshoe Curve National Historic Landmark, partOf, Norfolk Southern Pittsburgh Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Norfolk Southern Pittsburgh Line Context triple: [Horseshoe Curve National Historic Landmark, partOf, Norfolk Southern Pittsburgh Line]
-
A.
Norfolk Southern Pittsburgh Line
chosen
The Norfolk Southern Pittsburgh Line is a major freight rail corridor crossing Pennsylvania, known for its heavy traffic, steep grades, and key role in linking the U.S. East Coast with the Midwest.
-
B.
Norfolk Southern Southern Tier Line
The Norfolk Southern Southern Tier Line is a freight rail corridor in New York State that also hosts Metro-North’s Port Jervis Line commuter service.
-
C.
Pittsburgh and West Virginia Railway
The Pittsburgh and West Virginia Railway was a regional railroad that operated in the Appalachian area, providing freight and passenger service across parts of Pennsylvania and West Virginia.
-
D.
Southern Main Line
The Southern Main Line is a major Swedish railway route that connects key cities in the southern part of the country and serves as an important corridor for both passenger and freight traffic.
-
E.
Pennsylvania Railroad Schuylkill Branch
The Pennsylvania Railroad Schuylkill Branch was a former rail line running along the Schuylkill River in the Philadelphia region, historically used for both passenger and freight service and later partly incorporated into modern commuter rail operations.
- 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_69d85cc7ea3481908228b5acb7d06f12 |
completed | April 10, 2026, 2:13 a.m. |
| NER | Named-entity recognition | batch_69ded62038508190946499cd3552990e |
completed | April 15, 2026, 12:04 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe72bf2120819099df39bdc1da691b |
completed | May 8, 2026, 11:33 p.m. |
Created at: April 10, 2026, 2:32 a.m.