U.S. Route 521 in South Carolina
E1008276
U.S. Route 521 in South Carolina is a north–south U.S. Highway that connects several communities between the Lowcountry and the North Carolina state line, serving as an important regional transportation corridor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| U.S. Route 521 in South Carolina canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T12803847 — 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: U.S. Route 521 in South Carolina Context triple: [U.S. Highways in South Carolina, hasRoute, U.S. Route 521 in South Carolina]
-
A.
U.S. Route 52 in South Carolina
U.S. Route 52 in South Carolina is a major north–south federal highway that connects cities such as Charleston, Florence, and Darlington, serving as an important corridor for regional travel and commerce.
-
B.
U.S. Route 321 in South Carolina
U.S. Route 321 in South Carolina is a north–south United States highway that connects several communities between the Georgia state line and the North Carolina border, serving as an important inland alternative to more coastal routes.
-
C.
U.S. Route 21 in South Carolina
U.S. Route 21 in South Carolina is a north–south federal highway that connects coastal areas near Beaufort and Hilton Head Island to inland communities as it travels toward the central part of the state.
-
D.
U.S. Route 25 in South Carolina
U.S. Route 25 in South Carolina is a major north–south federal highway that connects the Augusta, Georgia area to the Greenville region, serving as an important corridor for regional travel and commerce.
-
E.
U.S. Route 123 in South Carolina
U.S. Route 123 in South Carolina is a primary U.S. highway that connects the Greenville area with Clemson and other Upstate communities, serving as an important regional corridor for traffic and commerce.
- 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: U.S. Route 521 in South Carolina Target entity description: U.S. Route 521 in South Carolina is a north–south U.S. Highway that connects several communities between the Lowcountry and the North Carolina state line, serving as an important regional transportation corridor.
-
A.
U.S. Route 52 in South Carolina
U.S. Route 52 in South Carolina is a major north–south federal highway that connects cities such as Charleston, Florence, and Darlington, serving as an important corridor for regional travel and commerce.
-
B.
U.S. Route 321 in South Carolina
U.S. Route 321 in South Carolina is a north–south United States highway that connects several communities between the Georgia state line and the North Carolina border, serving as an important inland alternative to more coastal routes.
-
C.
U.S. Route 21 in South Carolina
U.S. Route 21 in South Carolina is a north–south federal highway that connects coastal areas near Beaufort and Hilton Head Island to inland communities as it travels toward the central part of the state.
-
D.
U.S. Route 25 in South Carolina
U.S. Route 25 in South Carolina is a major north–south federal highway that connects the Augusta, Georgia area to the Greenville region, serving as an important corridor for regional travel and commerce.
-
E.
U.S. Route 123 in South Carolina
U.S. Route 123 in South Carolina is a primary U.S. highway that connects the Greenville area with Clemson and other Upstate communities, serving as an important regional corridor for traffic and commerce.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Highway segment
ⓘ
road transportation corridor ⓘ |
| category |
Transportation in Clarendon County, South Carolina
ⓘ
Transportation in Georgetown County, South Carolina ⓘ Transportation in Kershaw County, South Carolina ⓘ Transportation in Lancaster County, South Carolina ⓘ Transportation in Sumter County, South Carolina ⓘ Transportation in Williamsburg County, South Carolina ⓘ U.S. Highways in South Carolina ⓘ |
| connectsRegion |
South Carolina Lowcountry
ⓘ
linked to:
Lowcountry of South Carolina
|
| connectsTo |
Interstate 20 near Camden, South Carolina
ⓘ
linked to:
Interstate 20 in South Carolina
Interstate 95 near Manning, South Carolina ⓘ North Carolina state line ⓘ South Carolina Highway 9 in Lancaster, South Carolina ⓘ
linked to:
Lancaster, South Carolina
U.S. Route 1 in Camden, South Carolina ⓘ
linked to:
U.S. Route 1 in South Carolina
U.S. Route 17 in Georgetown, South Carolina ⓘ
linked to:
U.S. Route 17 in South Carolina
U.S. Route 378 in Sumter, South Carolina ⓘ U.S. Route 601 in Kershaw County, South Carolina ⓘ
linked to:
U.S. Route 601 in South Carolina
U.S. Route 76 in Sumter, South Carolina ⓘ
linked to:
U.S. Route 76 in South Carolina
|
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
Black River in South Carolina
ⓘ
linked to:
Black River (South Carolina)
Santee River in South Carolina ⓘ
linked to:
Santee River
|
| direction | north–south ⓘ |
| function | regional transportation corridor ⓘ |
| highwaySystem | United States Numbered Highway System ⓘ |
| maintainedBy | South Carolina Department of Transportation ⓘ |
| parallelTo | CSX Transportation rail lines in parts of South Carolina ⓘ |
| partOf | U.S. Route 521 NERFINISHED ⓘ |
| passesThrough |
Clarendon County, South Carolina
ⓘ
Georgetown County, South Carolina ⓘ Kershaw County, South Carolina ⓘ Lancaster County, South Carolina ⓘ Sumter County, South Carolina ⓘ Williamsburg County, South Carolina ⓘ |
| regionServed |
Lowcountry of South Carolina
ⓘ
Midlands of South Carolina ⓘ Pee Dee region of South Carolina ⓘ |
| role | connector between rural communities and urban centers ⓘ |
| servesCity |
Camden, South Carolina
ⓘ
linked to:
Camden, South Carolina, United States
Georgetown, South Carolina ⓘ Greeleyville, South Carolina ⓘ Kingstree, South Carolina ⓘ Lancaster, South Carolina ⓘ Manning, South Carolina ⓘ Sumter, South Carolina ⓘ |
| state | South Carolina ⓘ |
| terminusNorth | North Carolina state line near Charlotte metropolitan area ⓘ |
| terminusSouth | Georgetown, South Carolina ⓘ |
| usedFor |
commuter traffic
ⓘ
freight transport ⓘ tourist travel ⓘ |
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: U.S. Route 521 in South Carolina Description of subject: U.S. Route 521 in South Carolina is a north–south U.S. Highway that connects several communities between the Lowcountry and the North Carolina state line, serving as an important regional transportation corridor.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.