U.S. Route 521 Alternate in South Carolina
E1010659
U.S. Route 521 Alternate in South Carolina is an auxiliary U.S. highway that provides an alternate alignment to the main U.S. Route 521, serving local traffic and access needs along its corridor in the state.
All labels observed (2)
| Label | Occurrences |
|---|---|
| U.S. Route 521 Alternate (South Carolina) | 1 |
| U.S. Route 521 Alternate in South Carolina canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12803855 — 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 Alternate in South Carolina Context triple: [U.S. Highways in South Carolina, hasRoute, U.S. Route 521 Alternate in South Carolina]
-
A.
U.S. Route 176 Alternate in South Carolina
U.S. Route 176 Alternate in South Carolina is a special auxiliary alignment of U.S. Route 176 that provides an alternate path through part of the state’s U.S. Highway network.
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B.
U.S. Route 17 Alternate in South Carolina
U.S. Route 17 Alternate in South Carolina is an auxiliary U.S. highway that provides an inland alternative to the main U.S. Route 17 corridor through the state.
-
C.
U.S. Route 521 in South Carolina
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.
-
D.
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.
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E.
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.
- 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 Alternate in South Carolina Target entity description: U.S. Route 521 Alternate in South Carolina is an auxiliary U.S. highway that provides an alternate alignment to the main U.S. Route 521, serving local traffic and access needs along its corridor in the state.
-
A.
U.S. Route 176 Alternate in South Carolina
U.S. Route 176 Alternate in South Carolina is a special auxiliary alignment of U.S. Route 176 that provides an alternate path through part of the state’s U.S. Highway network.
-
B.
U.S. Route 17 Alternate in South Carolina
U.S. Route 17 Alternate in South Carolina is an auxiliary U.S. highway that provides an inland alternative to the main U.S. Route 17 corridor through the state.
-
C.
U.S. Route 521 in South Carolina
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.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
alternate U.S. Highway
ⓘ
auxiliary U.S. Highway ⓘ |
| abbreviation |
US 521 Alt.
ⓘ
linked to:
US 521
US 521 Alternate ⓘ
linked to:
US 521
|
| belongsTo |
South Carolina state highway network
ⓘ
linked to:
South Carolina State Highway System
|
| country |
United States
ⓘ
linked to:
United States of America
|
| designation |
U.S. Route 521 Alternate (South Carolina)
ⓘ
linked to:
U.S. Route 521 Alternate in South Carolina
|
| function |
provides alternate alignment to U.S. Route 521
ⓘ
serves access needs along its corridor ⓘ |
| hasAccessControl | partial ⓘ |
| hasNumber | 521 ⓘ |
| highwayType | U.S. Highway Alternate ⓘ |
| isIn | eastern United States ⓘ |
| jurisdiction | state of South Carolina ⓘ |
| locatedIn | South Carolina ⓘ |
| maintainedBy | South Carolina Department of Transportation ⓘ |
| networkRole |
connector route
ⓘ
relief route for U.S. Route 521 ⓘ |
| parallelTo | U.S. Route 521 NERFINISHED ⓘ |
| parentRoute | U.S. Route 521 NERFINISHED ⓘ |
| partOf |
U.S. Highway System
ⓘ
linked to:
United States Numbered Highway System
|
| roadClassification | numbered U.S. highway ⓘ |
| routeType | alternate alignment ⓘ |
| serves | local traffic ⓘ |
| signingStandard | United States Numbered Highway shield ⓘ |
| state | South Carolina ⓘ |
| surface | paved ⓘ |
| usedFor |
automobile traffic
ⓘ
local travel ⓘ truck traffic ⓘ |
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 Alternate in South Carolina Description of subject: U.S. Route 521 Alternate in South Carolina is an auxiliary U.S. highway that provides an alternate alignment to the main U.S. Route 521, serving local traffic and access needs along its corridor in the state.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
U.S. Route 521 Alternate in South Carolina
→
designation
→
U.S. Route 521 Alternate (South Carolina)
ⓘ
linked to: U.S. Route 521 Alternate in South Carolina