Triple
T508756
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Philadelphia, Wilmington and Baltimore Railroad |
E10558
|
entity |
| Predicate | formedFromMergerOf |
P6637
|
FINISHED |
| Object |
Delaware and Maryland Railroad
The Delaware and Maryland Railroad was a 19th-century regional rail line that operated in the Mid-Atlantic United States before becoming part of the Philadelphia, Wilmington and Baltimore Railroad through consolidation.
|
E10558
|
NE FINISHED |
How this triple was built (4 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: Delaware and Maryland Railroad | Statement: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Delaware and Maryland Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Delaware and Maryland Railroad Context triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Delaware and Maryland Railroad]
-
A.
Philadelphia, Wilmington and Baltimore Railroad
The Philadelphia, Wilmington and Baltimore Railroad was a 19th-century rail line that formed a key segment of the main corridor linking the northeastern United States, particularly connecting Philadelphia with points south.
-
B.
Baltimore and Susquehanna Railroad
The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
-
C.
Baltimore and Ohio Railroad
The Baltimore and Ohio Railroad was one of the earliest and most influential American railroads, playing a key role in the development of U.S. transportation and commerce in the 19th and early 20th centuries.
-
D.
Western Maryland Railway
Western Maryland Railway was a historic regional railroad that operated primarily in Maryland, Pennsylvania, and West Virginia, known for hauling coal and freight through the Appalachian region before being absorbed into larger rail systems.
-
E.
Wilmington/Newark Line
The Wilmington/Newark Line is a commuter rail service in the SEPTA Regional Rail system that connects Philadelphia with Wilmington and Newark in Delaware.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Delaware and Maryland Railroad Triple: [Philadelphia, Wilmington and Baltimore Railroad, formedFromMergerOf, Delaware and Maryland Railroad]
Generated description
The Delaware and Maryland Railroad was a 19th-century regional rail line that operated in the Mid-Atlantic United States before becoming part of the Philadelphia, Wilmington and Baltimore Railroad through consolidation.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Delaware and Maryland Railroad Target entity description: The Delaware and Maryland Railroad was a 19th-century regional rail line that operated in the Mid-Atlantic United States before becoming part of the Philadelphia, Wilmington and Baltimore Railroad through consolidation.
-
A.
Philadelphia, Wilmington and Baltimore Railroad
chosen
The Philadelphia, Wilmington and Baltimore Railroad was a 19th-century rail line that formed a key segment of the main corridor linking the northeastern United States, particularly connecting Philadelphia with points south.
-
B.
Baltimore and Susquehanna Railroad
The Baltimore and Susquehanna Railroad was an early 19th-century American railroad that helped pioneer rail transportation in Maryland and Pennsylvania, eventually becoming part of the Northern Central Railway system.
-
C.
Baltimore and Ohio Railroad
The Baltimore and Ohio Railroad was one of the earliest and most influential American railroads, playing a key role in the development of U.S. transportation and commerce in the 19th and early 20th centuries.
-
D.
Western Maryland Railway
Western Maryland Railway was a historic regional railroad that operated primarily in Maryland, Pennsylvania, and West Virginia, known for hauling coal and freight through the Appalachian region before being absorbed into larger rail systems.
-
E.
Wilmington/Newark Line
The Wilmington/Newark Line is a commuter rail service in the SEPTA Regional Rail system that connects Philadelphia with Wilmington and Newark in Delaware.
- F. None of above.
Provenance (5 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_69a2e848adf881908e5e04f7af030093 |
completed | Feb. 28, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69a2f162f3888190b057ad04e40a30e2 |
completed | Feb. 28, 2026, 1:45 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a4b5d3b5f0819093c5d55bdf5a7c4d |
completed | March 1, 2026, 9:55 p.m. |
| NEDg | Description generation | batch_69a4b673f5dc8190a70b7ddcf76ec016 |
completed | March 1, 2026, 9:58 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a4b79ec4b48190b992f642aa7cddb7 |
completed | March 1, 2026, 10:03 p.m. |
Created at: Feb. 28, 2026, 1:12 p.m.