St. Lawrence and Atlantic Railroad
E67839
The St. Lawrence and Atlantic Railroad is a regional rail line in the northeastern United States and Canada that provides freight transportation across parts of Maine, New Hampshire, Vermont, and Quebec.
All labels observed (1)
| Label | Occurrences |
|---|---|
| St. Lawrence and Atlantic Railroad canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T543278 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: St. Lawrence and Atlantic Railroad Context triple: [Gilead, Maine, traversedBy, St. Lawrence and Atlantic Railroad]
-
A.
New York Central Railroad
New York Central Railroad was one of the largest and most influential American railroads, known for its extensive network in the northeastern United States and iconic passenger trains like the 20th Century Limited.
-
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.
Northern Central Railway
Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
-
D.
Fitchburg Railroad
The Fitchburg Railroad was a historic New England rail line that operated across Massachusetts and into Vermont, later becoming part of the Boston and Maine Railroad system.
-
E.
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.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: St. Lawrence and Atlantic Railroad Target entity description: The St. Lawrence and Atlantic Railroad is a regional rail line in the northeastern United States and Canada that provides freight transportation across parts of Maine, New Hampshire, Vermont, and Quebec.
-
A.
New York Central Railroad
New York Central Railroad was one of the largest and most influential American railroads, known for its extensive network in the northeastern United States and iconic passenger trains like the 20th Century Limited.
-
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.
Northern Central Railway
Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
-
D.
Fitchburg Railroad
The Fitchburg Railroad was a historic New England rail line that operated across Massachusetts and into Vermont, later becoming part of the Boston and Maine Railroad system.
-
E.
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.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
railroad company
ⓘ
regional railroad ⓘ |
| borderCrossingType | rail border crossing ⓘ |
| cargoType |
bulk commodities
ⓘ
general freight ⓘ industrial products ⓘ |
| connects |
Maine
ⓘ
New Hampshire ⓘ Quebec ⓘ
linked to:
Quebec, Canada
Vermont ⓘ |
| country |
Canada
ⓘ
United States ⓘ
linked to:
United States of America
|
| crossesBorderBetween | United States and Canada ⓘ |
| hasAbbreviation | SLR ⓘ |
| hasModeOfTransport | rail ⓘ |
| hasRouteType | mainline freight ⓘ |
| infrastructureType | rail line ⓘ |
| isPartOf | North American rail network ⓘ |
| locatedIn |
New England
ⓘ
Quebec ⓘ
linked to:
Quebec, Canada
|
| operatesIn |
Maine
ⓘ
New Hampshire ⓘ Quebec ⓘ
linked to:
Quebec, Canada
Vermont ⓘ |
| primaryService | freight transportation ⓘ |
| railGauge | standard gauge ⓘ |
| regionServed |
Eastern Canada
ⓘ
Northeastern United States ⓘ |
| serviceType | regional freight service ⓘ |
| trackOwnership | owns and operates its track ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: St. Lawrence and Atlantic Railroad Description of subject: The St. Lawrence and Atlantic Railroad is a regional rail line in the northeastern United States and Canada that provides freight transportation across parts of Maine, New Hampshire, Vermont, and Quebec.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.