Triple
T6462542
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tom Thumb (locomotive) |
E142154
|
entity |
| Predicate | locationOfRace |
P21366
|
FINISHED |
| Object |
Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills
The Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills is an early American railway line notable as the route of one of the first U.S. locomotive trials, including the famous race involving the Tom Thumb.
|
E594340
|
NE FINISHED |
How this triple was built (5 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 Ohio Railroad track between Baltimore and Ellicott's Mills | Statement: [Tom Thumb (locomotive), locationOfRace, Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills Context triple: [Tom Thumb (locomotive), locationOfRace, Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills]
-
A.
Pennsylvania Railroad tracks
The Pennsylvania Railroad tracks are rail lines that were part of the extensive network operated by the historic Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
B.
Baltimore rail network
The Baltimore rail network is the interconnected system of freight and passenger rail lines serving the Baltimore, Maryland metropolitan area, linking the city to regional and national rail corridors.
-
C.
East Subdivision to Baltimore
East Subdivision to Baltimore is a key rail line of the Western Maryland Railway that provided an important route into the Baltimore area.
-
D.
Panhandle Route of the Pennsylvania Railroad
The Panhandle Route of the Pennsylvania Railroad was a major historic rail line that connected Pittsburgh with the American Midwest, serving as an important freight and passenger corridor in the 19th and early 20th centuries.
-
E.
Baltimore Light Rail
Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
- 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 Ohio Railroad track between Baltimore and Ellicott's Mills Triple: [Tom Thumb (locomotive), locationOfRace, Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills]
Generated description
The Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills is an early American railway line notable as the route of one of the first U.S. locomotive trials, including the famous race involving the Tom Thumb.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills Target entity description: The Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills is an early American railway line notable as the route of one of the first U.S. locomotive trials, including the famous race involving the Tom Thumb.
-
A.
Pennsylvania Railroad tracks
The Pennsylvania Railroad tracks are rail lines that were part of the extensive network operated by the historic Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
B.
Baltimore rail network
The Baltimore rail network is the interconnected system of freight and passenger rail lines serving the Baltimore, Maryland metropolitan area, linking the city to regional and national rail corridors.
-
C.
East Subdivision to Baltimore
East Subdivision to Baltimore is a key rail line of the Western Maryland Railway that provided an important route into the Baltimore area.
-
D.
Panhandle Route of the Pennsylvania Railroad
The Panhandle Route of the Pennsylvania Railroad was a major historic rail line that connected Pittsburgh with the American Midwest, serving as an important freight and passenger corridor in the 19th and early 20th centuries.
-
E.
Baltimore Light Rail
Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: locationOfRace Context triple: [Tom Thumb (locomotive), locationOfRace, Baltimore and Ohio Railroad track between Baltimore and Ellicott's Mills]
-
A.
locationOfCompetition
chosen
Indicates the place or venue where a competition or contest takes or took place.
-
B.
positionOnRace
Indicates the relative ranking or placement an entity holds within the context of a race or competitive event.
-
C.
raceMeeting
Indicates a competitive event where multiple participants race against each other under shared rules and conditions.
-
D.
locationOfEventDescribed
Indicates that one entity is the place or setting where the event described by another entity occurs.
-
E.
hasRacecourse
Indicates that an entity possesses, contains, or is associated with a racecourse facility or track.
- F. None of above.
Provenance (6 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_69c008d2f91c8190a8178767a35e08fc |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c069f7e5908190ae4d8da2b14d274f |
completed | March 22, 2026, 10:15 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c64be4e6888190a685f447e9950163 |
completed | March 27, 2026, 9:20 a.m. |
| NEDg | Description generation | batch_69c64e4413f481908561a86bc9a9b0b2 |
completed | March 27, 2026, 9:30 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c64ec0d40881908fda2e994f0f6ed5 |
completed | March 27, 2026, 9:32 a.m. |
| PD | Predicate disambiguation | batch_69c0673d46a08190bc8bcd29f9555fe7 |
completed | March 22, 2026, 10:03 p.m. |
Created at: March 22, 2026, 4:49 p.m.