State Highway 21 (Texas)
E423243
State Highway 21 (Texas) is a major east–west state highway that traverses central and eastern Texas, serving communities such as the Bryan–College Station area and following portions of historic routes like the Old San Antonio Road.
All labels observed (1)
| Label | Occurrences |
|---|---|
| State Highway 21 (Texas) canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T4249301 — 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: State Highway 21 (Texas) Context triple: [Bryan–College Station metropolitan area, transportationInfrastructure, State Highway 21 (Texas)]
-
A.
Texas State Highway 19
Texas State Highway 19 is a north–south state highway in eastern Texas that connects several rural communities and small cities between Huntsville and Paris.
-
B.
Texas State Highway 121
Texas State Highway 121 is a major north–south state highway in the Dallas–Fort Worth metropolitan area of Texas, serving as a key commuter and regional connector route.
-
C.
Texas State Highway 12
Texas State Highway 12 is a state-maintained roadway in Texas that serves as a regional connector route providing access to communities in the Dallas–Fort Worth area.
-
D.
Texas State Highway 11
Texas State Highway 11 is a state highway in northeastern Texas that runs east–west, connecting several communities including Sherman and serving as an important regional route.
-
E.
Texas State Highway 16
Texas State Highway 16 is a major north–south state highway in Texas that runs from the Mexican border near Zapata through the Texas Hill Country to the Dallas–Fort Worth region.
- 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: State Highway 21 (Texas) Target entity description: State Highway 21 (Texas) is a major east–west state highway that traverses central and eastern Texas, serving communities such as the Bryan–College Station area and following portions of historic routes like the Old San Antonio Road.
-
A.
Texas State Highway 19
Texas State Highway 19 is a north–south state highway in eastern Texas that connects several rural communities and small cities between Huntsville and Paris.
-
B.
Texas State Highway 121
Texas State Highway 121 is a major north–south state highway in the Dallas–Fort Worth metropolitan area of Texas, serving as a key commuter and regional connector route.
-
C.
Texas State Highway 12
Texas State Highway 12 is a state-maintained roadway in Texas that serves as a regional connector route providing access to communities in the Dallas–Fort Worth area.
-
D.
Texas State Highway 11
Texas State Highway 11 is a state highway in northeastern Texas that runs east–west, connecting several communities including Sherman and serving as an important regional route.
-
E.
Texas State Highway 16
Texas State Highway 16 is a major north–south state highway in Texas that runs from the Mexican border near Zapata through the Texas Hill Country to the Dallas–Fort Worth region.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
road transportation infrastructure
ⓘ
state highway ⓘ |
| connectsToState | Louisiana NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| direction | east–west ⓘ |
| easternTerminusNear | Louisiana state line ⓘ |
| followsHistoricRoute |
El Camino Real de los Tejas
NERFINISHED
ⓘ
Old San Antonio Road NERFINISHED ⓘ |
| hasJunctionWith |
Interstate 35
NERFINISHED
ⓘ
State Highway 6 (Texas) NERFINISHED ⓘ State Highway 71 (Texas) NERFINISHED ⓘ U.S. Route 190 NERFINISHED ⓘ U.S. Route 59 NERFINISHED ⓘ U.S. Route 69 NERFINISHED ⓘ U.S. Route 79 NERFINISHED ⓘ |
| highwayNumber | 21 ⓘ |
| highwayType | State Highway ⓘ |
| historicalSignificance | follows portions of historic Old San Antonio Road ⓘ |
| isPartOfHistoricTrailCorridor | El Camino Real de los Tejas National Historic Trail NERFINISHED ⓘ |
| maintainedBy | Texas Department of Transportation NERFINISHED ⓘ |
| partOf | Texas state highway system NERFINISHED ⓘ |
| passesThroughCity |
Bastrop, Texas
NERFINISHED
ⓘ
Bryan, Texas NERFINISHED ⓘ Caldwell, Texas NERFINISHED ⓘ Crockett, Texas NERFINISHED ⓘ Madisonville, Texas NERFINISHED ⓘ Nacogdoches, Texas NERFINISHED ⓘ San Augustine, Texas NERFINISHED ⓘ |
| passesThroughCounty |
Angelina County, Texas
NERFINISHED
ⓘ
Bastrop County, Texas NERFINISHED ⓘ Brazos County, Texas NERFINISHED ⓘ Burleson County, Texas NERFINISHED ⓘ Houston County, Texas NERFINISHED ⓘ Lee County, Texas NERFINISHED ⓘ Madison County, Texas NERFINISHED ⓘ Nacogdoches County, Texas NERFINISHED ⓘ Sabine County, Texas NERFINISHED ⓘ San Augustine County, Texas NERFINISHED ⓘ |
| routeFunction | major east–west corridor in central and eastern Texas ⓘ |
| servesCity |
Bryan
NERFINISHED
ⓘ
College Station NERFINISHED ⓘ |
| servesFunction | connects multiple rural communities to regional urban centers ⓘ |
| servesMetropolitanArea | Bryan–College Station metropolitan area NERFINISHED ⓘ |
| state | Texas ⓘ |
| traversesRegion |
central Texas
ⓘ
eastern Texas NERFINISHED ⓘ |
| westernTerminusNear | San Marcos, Texas NERFINISHED ⓘ |
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: State Highway 21 (Texas) Description of subject: State Highway 21 (Texas) is a major east–west state highway that traverses central and eastern Texas, serving communities such as the Bryan–College Station area and following portions of historic routes like the Old San Antonio Road.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Bryan, Texas