Triple
T8087071
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chester Transportation Center |
E188758
|
entity |
| Predicate | formerRailLine |
P30332
|
FINISHED |
| Object | Pennsylvania Railroad |
E435
|
NE FINISHED |
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: Pennsylvania Railroad | Statement: [Chester Transportation Center, formerRailLine, Pennsylvania Railroad]
Disambiguation candidates (2 decisions)
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: Pennsylvania Railroad Context triple: [Chester Transportation Center, formerRailLine, Pennsylvania Railroad]
-
A.
Pennsylvania Railroad Company
chosen
The Pennsylvania Railroad Company was one of the largest and most influential American railroads of the 19th and early 20th centuries, playing a central role in the industrial development of the United States.
-
B.
Philadelphia and Reading Railroad
The Philadelphia and Reading Railroad was a major 19th- and early 20th-century American railroad and coal-transporting line centered in Pennsylvania, later known as part of the Reading Company system.
-
C.
Philadelphia and Western Railroad
The Philadelphia and Western Railroad was an early 20th-century interurban railway in the Philadelphia region that later evolved into what is now known as the Norristown High Speed Line.
-
D.
Lehigh Valley Railroad
Lehigh Valley Railroad was a major northeastern U.S. railroad that primarily served the anthracite coal region of Pennsylvania and connected it to key industrial and port cities.
-
E.
Erie Railroad
The Erie Railroad was a major 19th- and early 20th-century American railroad that operated extensive passenger and freight services across the northeastern United States, particularly linking New York City with the Midwest.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: formerRailLine Context triple: [Chester Transportation Center, formerRailLine, Pennsylvania Railroad]
-
A.
formerRailwayLine
Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
-
B.
formerRailroad
chosen
Indicates that an entity was previously a railroad but no longer functions as one.
-
C.
followsFormerRailroad
Indicates that something is aligned with or traces the route of a former railroad line.
-
D.
formerRailUse
Indicates that an entity previously served a particular railway-related function or purpose, but no longer does so.
-
E.
originalRailroadName
Indicates the name of the railroad as it was originally known or designated, before any later changes such as mergers, rebrandings, or renamings.
- F. None of above.
Provenance (4 batches)
| Stage | Batch ID | Job type | Status |
|---|---|---|---|
| creating | batch_69ca82b662e88190b9323daab8c28a21 |
elicitation | completed |
| NER | batch_69cb4162244481908ab1202a9974deaa |
ner | completed |
| NED1 | batch_69cc6406395c8190ad8db69c878ce9b8 |
ned_source_triple | completed |
| PD | batch_69cb04a14cd88190a79ed26cbeec1c33 |
pd | completed |
Created at: March 30, 2026, 5:29 p.m.