Triple
T16142559
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | assassination of James A. Garfield |
E391696
|
entity |
| Predicate | location |
P40
|
FINISHED |
| Object |
Baltimore and Potomac Railroad Station
The Baltimore and Potomac Railroad Station was a Washington, D.C. train depot historically known as the site where U.S. President James A. Garfield was assassinated in 1881.
|
E1196504
|
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: Baltimore and Potomac Railroad Station | Statement: [assassination of James A. Garfield, location, Baltimore and Potomac Railroad Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Baltimore and Potomac Railroad Station Context triple: [assassination of James A. Garfield, location, Baltimore and Potomac Railroad Station]
-
A.
Union Station (Baltimore)
Union Station (Baltimore) was an earlier major railroad terminal in Baltimore that served as the city's primary passenger rail hub before being superseded by Pennsylvania Station.
-
B.
Baltimore & Ohio Railroad station
The Baltimore & Ohio Railroad station is a historic train depot that served as a key passenger and freight hub for the pioneering B&O Railroad, one of the oldest railroads in the United States.
-
C.
Pennsylvania Station (Baltimore)
Pennsylvania Station (Baltimore) is the main intercity and regional rail hub in Baltimore, Maryland, serving Amtrak and commuter trains along the Northeast Corridor.
-
D.
Arlington Depot
Arlington Depot is a historic railroad station in Arlington, Tennessee, preserved as a landmark reflecting the town’s early transportation and commercial history.
-
E.
Mount Clare Station
Mount Clare Station is a historic Baltimore train station that served as a key early facility of the Baltimore & Ohio Railroad and now forms part of the B&O Railroad Museum complex.
- 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: Baltimore and Potomac Railroad Station Triple: [assassination of James A. Garfield, location, Baltimore and Potomac Railroad Station]
Generated description
The Baltimore and Potomac Railroad Station was a Washington, D.C. train depot historically known as the site where U.S. President James A. Garfield was assassinated in 1881.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Baltimore and Potomac Railroad Station Target entity description: The Baltimore and Potomac Railroad Station was a Washington, D.C. train depot historically known as the site where U.S. President James A. Garfield was assassinated in 1881.
-
A.
Union Station (Baltimore)
Union Station (Baltimore) was an earlier major railroad terminal in Baltimore that served as the city's primary passenger rail hub before being superseded by Pennsylvania Station.
-
B.
Baltimore & Ohio Railroad station
The Baltimore & Ohio Railroad station is a historic train depot that served as a key passenger and freight hub for the pioneering B&O Railroad, one of the oldest railroads in the United States.
-
C.
Pennsylvania Station (Baltimore)
Pennsylvania Station (Baltimore) is the main intercity and regional rail hub in Baltimore, Maryland, serving Amtrak and commuter trains along the Northeast Corridor.
-
D.
Arlington Depot
Arlington Depot is a historic railroad station in Arlington, Tennessee, preserved as a landmark reflecting the town’s early transportation and commercial history.
-
E.
Mount Clare Station
Mount Clare Station is a historic Baltimore train station that served as a key early facility of the Baltimore & Ohio Railroad and now forms part of the B&O Railroad Museum complex.
- 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_69d87f1c65e48190aa2b4c472e9bafc4 |
completed | April 10, 2026, 4:39 a.m. |
| NER | Named-entity recognition | batch_69e21d9082588190bc7e6ff491f0d94e |
completed | April 17, 2026, 11:46 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fff2b75988819094baaff8f53f48ce |
completed | May 10, 2026, 2:51 a.m. |
| NEDg | Description generation | batch_69fff36d39f48190bb48a1821f08664a |
completed | May 10, 2026, 2:54 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69fff3f2760c8190a58fedc2798614ae |
completed | May 10, 2026, 2:56 a.m. |
Created at: April 10, 2026, 5:01 a.m.