Triple
T2865413
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chesapeake and Ohio Railway |
E63425
|
entity |
| Predicate | formedByMergerOf |
P77
|
FINISHED |
| Object |
Virginia Central Railroad
The Virginia Central Railroad was a 19th-century Virginia railway that played a key role in regional transportation and Civil War logistics before becoming a principal predecessor of the Chesapeake and Ohio Railway.
|
E305227
|
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: Virginia Central Railroad | Statement: [Chesapeake and Ohio Railway, formedByMergerOf, Virginia Central Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Virginia Central Railroad Context triple: [Chesapeake and Ohio Railway, formedByMergerOf, Virginia Central Railroad]
-
A.
Washington and Old Dominion Railroad
The Washington and Old Dominion Railroad was a regional rail line in Northern Virginia that operated from the 19th to the mid-20th century, later converted into the popular Washington & Old Dominion Railroad Trail.
-
B.
Alexandria, Loudoun and Hampshire Railroad
The Alexandria, Loudoun and Hampshire Railroad was a 19th-century Virginia railway line that played a strategic role during the American Civil War, including in early engagements such as the Battle of Vienna.
-
C.
Richmond, Fredericksburg and Potomac Railroad
The Richmond, Fredericksburg and Potomac Railroad was a historic rail line in Virginia that served as a key north–south transportation corridor linking Washington, D.C. with Richmond and points south.
-
D.
Seaboard System Railroad
Seaboard System Railroad was a major U.S. freight railroad of the 1980s that consolidated several southeastern carriers and later became part of CSX Transportation.
-
E.
Chesapeake and Ohio Railway
The Chesapeake and Ohio Railway was a major American railroad best known for hauling Appalachian coal and operating key routes through the Mid-Atlantic and Midwest before becoming part of the modern CSX rail system.
- 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: Virginia Central Railroad Triple: [Chesapeake and Ohio Railway, formedByMergerOf, Virginia Central Railroad]
Generated description
The Virginia Central Railroad was a 19th-century Virginia railway that played a key role in regional transportation and Civil War logistics before becoming a principal predecessor of the Chesapeake and Ohio Railway.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Virginia Central Railroad Target entity description: The Virginia Central Railroad was a 19th-century Virginia railway that played a key role in regional transportation and Civil War logistics before becoming a principal predecessor of the Chesapeake and Ohio Railway.
-
A.
Washington and Old Dominion Railroad
The Washington and Old Dominion Railroad was a regional rail line in Northern Virginia that operated from the 19th to the mid-20th century, later converted into the popular Washington & Old Dominion Railroad Trail.
-
B.
Alexandria, Loudoun and Hampshire Railroad
The Alexandria, Loudoun and Hampshire Railroad was a 19th-century Virginia railway line that played a strategic role during the American Civil War, including in early engagements such as the Battle of Vienna.
-
C.
Richmond, Fredericksburg and Potomac Railroad
The Richmond, Fredericksburg and Potomac Railroad was a historic rail line in Virginia that served as a key north–south transportation corridor linking Washington, D.C. with Richmond and points south.
-
D.
Seaboard System Railroad
Seaboard System Railroad was a major U.S. freight railroad of the 1980s that consolidated several southeastern carriers and later became part of CSX Transportation.
-
E.
Chesapeake and Ohio Railway
The Chesapeake and Ohio Railway was a major American railroad best known for hauling Appalachian coal and operating key routes through the Mid-Atlantic and Midwest before becoming part of the modern CSX rail system.
- F. None of above. chosen
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_69ab4c42fb8c8190b36e161d47c03b81 |
completed | March 6, 2026, 9:50 p.m. |
| NER | Named-entity recognition | batch_69abdfb9e64c819087b1a47caeb174d5 |
completed | March 7, 2026, 8:20 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b01da458ec8190ae07237d7e23b302 |
completed | March 10, 2026, 1:33 p.m. |
| NEDg | Description generation | batch_69b01e45f6e481908665e0961c3a3778 |
completed | March 10, 2026, 1:36 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69b0224832108190be252c0245d588d2 |
completed | March 10, 2026, 1:53 p.m. |
Created at: March 6, 2026, 10:02 p.m.