Triple
T14970569
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | SEPTA Chestnut Hill East Line |
E373304
|
entity |
| Predicate | formerName |
P65
|
FINISHED |
| Object | Reading Railroad Chestnut Hill Branch |
E74090
|
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: Reading Railroad Chestnut Hill Branch | Statement: [SEPTA Chestnut Hill East Line, formerName, Reading Railroad Chestnut Hill Branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Reading Railroad Chestnut Hill Branch Context triple: [SEPTA Chestnut Hill East Line, formerName, Reading Railroad Chestnut Hill Branch]
-
A.
Reading Railroad
Reading Railroad was a major 19th- and 20th-century American railroad company based in Pennsylvania, best known for transporting anthracite coal and for its iconic place on the U.S. Monopoly game board.
-
B.
former Pennsylvania Railroad Chestnut Hill Branch
The former Pennsylvania Railroad Chestnut Hill Branch was a suburban rail line in Philadelphia that provided commuter service between central city terminals and the Chestnut Hill neighborhood.
-
C.
Buckingham Branch Railroad
The Buckingham Branch Railroad is a Virginia-based shortline freight railroad that also hosts passenger service, notably providing trackage for Amtrak’s Cardinal route through the state.
-
D.
Reading Railroad lines north of Philadelphia
chosen
The Reading Railroad lines north of Philadelphia were a network of commuter and freight rail routes serving suburban and outlying communities in the northern Philadelphia region, later incorporated into modern regional rail services.
-
E.
Chesterfield Railroad
The Chesterfield Railroad was one of the earliest commercial railroads in the United States, built in the 1830s to transport coal from the mines around present-day Midlothian, Virginia, to the James River.
- 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_69d85ccbbcd48190acb56e7cf104d8ad |
completed | April 10, 2026, 2:13 a.m. |
| NER | Named-entity recognition | batch_69ded6e59a7c8190a1634a706ea68fda |
completed | April 15, 2026, 12:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe8be6ce68819099f841d83c6ca33d |
completed | May 9, 2026, 1:20 a.m. |
Created at: April 10, 2026, 2:49 a.m.