Overseas Railroad (historic)
E81032
The Overseas Railroad was an early 20th-century extension of the Florida East Coast Railway that famously connected mainland Florida to Key West via a series of long bridges across the Florida Keys.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Overseas Railroad (historic) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T647263 — 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: Overseas Railroad (historic) Context triple: [Florida Keys, hasTransportationInfrastructure, Overseas Railroad (historic)]
-
A.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
B.
Central Pacific Railroad historic route
The Central Pacific Railroad historic route is the original transcontinental rail line built in the 1860s that crossed the Sierra Nevada, including through Donner Pass, to connect California with the rest of the United States.
-
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.
Conrail
Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
-
E.
Texas and Pacific Railway
The Texas and Pacific Railway was a major 19th- and 20th-century American railroad that operated across Texas and into the southwestern United States, playing a key role in regional transportation and economic development.
- 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: Overseas Railroad (historic) Target entity description: The Overseas Railroad was an early 20th-century extension of the Florida East Coast Railway that famously connected mainland Florida to Key West via a series of long bridges across the Florida Keys.
-
A.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
B.
Central Pacific Railroad historic route
The Central Pacific Railroad historic route is the original transcontinental rail line built in the 1860s that crossed the Sierra Nevada, including through Donner Pass, to connect California with the rest of the United States.
-
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.
Conrail
Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
-
E.
Texas and Pacific Railway
The Texas and Pacific Railway was a major 19th- and 20th-century American railroad that operated across Texas and into the southwestern United States, playing a key role in regional transportation and economic development.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic railroad
ⓘ
railway line ⓘ |
| alsoKnownAs |
Key West Extension
ⓘ
Overseas Extension ⓘ |
| builder |
Florida East Coast Railway
ⓘ
linked to:
Florida East Coast Railway (historical)
|
| connects |
Key West
ⓘ
linked to:
Key West, Florida
mainland Florida ⓘ
linked to:
Florida Peninsula
|
| constructionEnd | 1912 ⓘ |
| constructionMethod |
extensive use of concrete viaducts
ⓘ
steel truss bridges ⓘ |
| constructionStart | 1905 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
Florida Keys
ⓘ
Straits of Florida ⓘ |
| damageEvent |
1935 Labor Day Hurricane
ⓘ
linked to:
Labor Day Hurricane of 1935
|
| destroyedBy | Labor Day Hurricane of 1935 ⓘ |
| developer | Henry Flagler ⓘ |
| enabled | rail access to deep-water port at Key West ⓘ |
| era | early 20th century ⓘ |
| gauge | standard gauge ⓘ |
| heritageStatus | portions listed on the U.S. National Register of Historic Places ⓘ |
| infrastructureReuse | railroad bridges converted to highway bridges ⓘ |
| length | about 128 miles ⓘ |
| locatedIn |
Florida
ⓘ
Florida Keys ⓘ |
| notableFor |
engineering challenges
ⓘ
hurricane-prone environment ⓘ long bridges over open ocean ⓘ |
| notableStructure | Seven Mile Bridge ⓘ |
| openingDate | 1912 ⓘ |
| operatedBy |
Florida East Coast Railway
ⓘ
linked to:
Florida East Coast Railway (historical)
|
| owner |
Florida East Coast Railway
ⓘ
linked to:
Florida East Coast Railway (historical)
|
| partOf |
Florida East Coast Railway
ⓘ
linked to:
Florida East Coast Railway (historical)
|
| passesThrough |
Big Pine Key
ⓘ
Key Largo ⓘ Marathon ⓘ |
| primaryPurpose |
freight service
ⓘ
passenger service ⓘ |
| regionServed | Monroe County, Florida ⓘ |
| reusedAs | Overseas Highway ⓘ |
| servedIndustry |
shipping connections to Cuba
ⓘ
tourism ⓘ |
| serviceEnd | 1935 ⓘ |
| startPoint | near Homestead, Florida ⓘ |
| status | defunct ⓘ |
| terminus |
Key West
ⓘ
linked to:
Key West, Florida
Miami ⓘ |
| trackGauge | 4 ft 8 1⁄2 in ⓘ |
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: Overseas Railroad (historic) Description of subject: The Overseas Railroad was an early 20th-century extension of the Florida East Coast Railway that famously connected mainland Florida to Key West via a series of long bridges across the Florida Keys.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.