U.S. Route 21 in South Carolina
E1004598
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| U.S. Route 21 in South Carolina canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12803835 — 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 21 in South Carolina Context triple: [U.S. Highways in South Carolina, hasRoute, U.S. Route 21 in South Carolina]
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A.
U.S. Route 21 in North Carolina
U.S. Route 21 in North Carolina is a north–south United States highway that runs from the Charlotte metropolitan area through the Piedmont toward the Virginia state line, serving as a regional connector for several communities along its corridor.
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B.
U.S. Route 17 in North Carolina
U.S. Route 17 in North Carolina is a major north–south highway that runs along the state’s coastal plain, connecting cities such as Wilmington, Jacksonville, New Bern, and Elizabeth City as part of a key regional corridor between South Carolina and Virginia.
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C.
U.S. Route 19 in North Carolina
U.S. Route 19 in North Carolina is a major north–south U.S. Highway that traverses the western part of the state, connecting mountain communities and serving as an important regional transportation corridor.
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D.
U.S. Route 23 in North Carolina
U.S. Route 23 in North Carolina is a major north–south highway traversing the state's western region, connecting mountain communities and serving as an important corridor for regional travel and commerce.
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E.
U.S. Route 321 in North Carolina
U.S. Route 321 in North Carolina is a major north–south highway that connects the Charlotte metropolitan area with the foothills and High Country regions, serving cities such as Gastonia, Hickory, Lenoir, and Boone.
- 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 21 in South Carolina Target entity description: 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.
-
A.
U.S. Route 21 in North Carolina
U.S. Route 21 in North Carolina is a north–south United States highway that runs from the Charlotte metropolitan area through the Piedmont toward the Virginia state line, serving as a regional connector for several communities along its corridor.
-
B.
U.S. Route 17 in North Carolina
U.S. Route 17 in North Carolina is a major north–south highway that runs along the state’s coastal plain, connecting cities such as Wilmington, Jacksonville, New Bern, and Elizabeth City as part of a key regional corridor between South Carolina and Virginia.
-
C.
U.S. Route 19 in North Carolina
U.S. Route 19 in North Carolina is a major north–south U.S. Highway that traverses the western part of the state, connecting mountain communities and serving as an important regional transportation corridor.
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D.
U.S. Route 23 in North Carolina
U.S. Route 23 in North Carolina is a major north–south highway traversing the state's western region, connecting mountain communities and serving as an important corridor for regional travel and commerce.
-
E.
U.S. Route 321 in North Carolina
U.S. Route 321 in North Carolina is a major north–south highway that connects the Charlotte metropolitan area with the foothills and High Country regions, serving cities such as Gastonia, Hickory, Lenoir, and Boone.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | U.S. Highway segment ⓘ |
| category |
Transportation in Beaufort County, South Carolina
ⓘ
Transportation in Colleton County, South Carolina ⓘ Transportation in Lexington County, South Carolina ⓘ Transportation in Orangeburg County, South Carolina ⓘ Transportation in Richland County, South Carolina ⓘ U.S. Highways in South Carolina NERFINISHED ⓘ |
| connectsRegion |
Midlands region of South Carolina
NERFINISHED
ⓘ
South Carolina Lowcountry NERFINISHED ⓘ |
| connectsTo |
Beaufort, South Carolina
NERFINISHED
ⓘ
Columbia, South Carolina NERFINISHED ⓘ Fripp Island, South Carolina NERFINISHED ⓘ Hilton Head Island, South Carolina NERFINISHED ⓘ Orangeburg, South Carolina NERFINISHED ⓘ Port Royal, South Carolina NERFINISHED ⓘ St. Helena Island, South Carolina NERFINISHED ⓘ Walterboro, South Carolina NERFINISHED ⓘ Yemassee, South Carolina NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| direction | north–south ⓘ |
| follows | corridor between Beaufort and Columbia ⓘ |
| formerPrimaryAccessTo | Hilton Head Island, South Carolina NERFINISHED ⓘ |
| hasJunctionWith |
Interstate 126 in Columbia
NERFINISHED
ⓘ
Interstate 20 in Columbia NERFINISHED ⓘ Interstate 95 near Yemassee NERFINISHED ⓘ U.S. Route 17 near Gardens Corner NERFINISHED ⓘ U.S. Route 78 in the Orangeburg area ⓘ |
| highwayNumber | 21 ⓘ |
| highwayType | U.S. Highway NERFINISHED ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| maintainedBy | South Carolina Department of Transportation NERFINISHED ⓘ |
| overlapsWith |
Interstate 26 in Columbia area
NERFINISHED
ⓘ
U.S. Route 176 in Columbia area NERFINISHED ⓘ U.S. Route 321 in Columbia area ⓘ |
| partOf | U.S. Route 21 NERFINISHED ⓘ |
| passesThroughCounty |
Beaufort County, South Carolina
NERFINISHED
ⓘ
Colleton County, South Carolina NERFINISHED ⓘ Lexington County, South Carolina NERFINISHED ⓘ Orangeburg County, South Carolina NERFINISHED ⓘ Richland County, South Carolina NERFINISHED ⓘ |
| roadFunction | principal arterial highway ⓘ |
| role | connects coastal communities to inland areas in South Carolina ⓘ |
| state | South Carolina ⓘ |
| surfaceType | paved highway ⓘ |
| terminusDirectionNorth | Columbia, South Carolina NERFINISHED ⓘ |
| terminusDirectionSouth |
near Fripp Island, South Carolina
ⓘ
near Hunting Island, South Carolina ⓘ |
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 21 in South Carolina Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.