California State Route 238
E238615
California State Route 238 is a state highway in the San Francisco Bay Area that serves as a major north–south arterial route through cities including Hayward in Alameda County.
All labels observed (1)
| Label | Occurrences |
|---|---|
| California State Route 238 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T909970 — 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: California State Route 238 Context triple: [Hayward, traversedBy, California State Route 238]
-
A.
California State Route 299
California State Route 299 is a major east–west highway in Northern California that traverses the Coast Ranges and Trinity Alps, connecting coastal communities near Eureka with inland regions including Redding.
-
B.
California State Route 28
California State Route 28 is a scenic state highway that runs along the north shore of Lake Tahoe, connecting communities in the Sierra Nevada region of California.
-
C.
California State Route 267
California State Route 267 is a mountain highway in the Lake Tahoe region of California that connects the Truckee area to North Lake Tahoe and nearby ski resorts.
-
D.
California State Route 58
California State Route 58 is a major east–west highway in California that connects the Central Coast and the southern Central Valley to the Mojave Desert and Interstate 15 near Barstow.
-
E.
California State Route 82
California State Route 82 is a major north–south arterial road on the San Francisco Peninsula that largely follows the historic El Camino Real through numerous Bay Area cities.
- 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: California State Route 238 Target entity description: California State Route 238 is a state highway in the San Francisco Bay Area that serves as a major north–south arterial route through cities including Hayward in Alameda County.
-
A.
California State Route 299
California State Route 299 is a major east–west highway in Northern California that traverses the Coast Ranges and Trinity Alps, connecting coastal communities near Eureka with inland regions including Redding.
-
B.
California State Route 28
California State Route 28 is a scenic state highway that runs along the north shore of Lake Tahoe, connecting communities in the Sierra Nevada region of California.
-
C.
California State Route 267
California State Route 267 is a mountain highway in the Lake Tahoe region of California that connects the Truckee area to North Lake Tahoe and nearby ski resorts.
-
D.
California State Route 58
California State Route 58 is a major east–west highway in California that connects the Central Coast and the southern Central Valley to the Mojave Desert and Interstate 15 near Barstow.
-
E.
California State Route 82
California State Route 82 is a major north–south arterial road on the San Francisco Peninsula that largely follows the historic El Camino Real through numerous Bay Area cities.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
road transportation infrastructure
ⓘ
state highway ⓘ |
| abbreviation |
CA 238
ⓘ
SR 238 ⓘ |
| category |
Roads in the San Francisco Bay Area
ⓘ
State highways in California ⓘ Transportation in Alameda County, California ⓘ |
| connects |
Castro Valley, California
ⓘ
Fremont ⓘ
surface form:
Fremont, California
Hayward ⓘ
surface form:
Hayward, California
Union City, California ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Alameda County ⓘ |
| direction | north–south ⓘ |
| follows |
A Street in Hayward
ⓘ
Foothill Boulevard ⓘ Mission Boulevard ⓘ |
| hasHistoricalIssue |
Route 238 Corridor Improvement Project controversy
ⓘ
canceled Hayward freeway project ⓘ |
| hasSectionType |
surface street
ⓘ
urban arterial ⓘ |
| highwaySystem |
California State Route
ⓘ
surface form:
California State Route System
|
| locatedIn |
Alameda County
ⓘ
surface form:
Alameda County, California
San Francisco Bay Area ⓘ |
| locatedInUrbanArea |
Fremont
ⓘ
surface form:
Fremont urban area
Hayward ⓘ
surface form:
Hayward urban area
|
| maintainedBy |
Caltrans
ⓘ
surface form:
California Department of Transportation
|
| majorJunction |
Bayfront Expressway (California State Route 84)
ⓘ
surface form:
California State Route 84 in Fremont
California State Route 92 ⓘ
surface form:
California State Route 92 in Hayward
Interstate 880 ⓘ
surface form:
Interstate 880 in Hayward
|
| parallelTo |
Interstate 680
ⓘ
Interstate 880 ⓘ |
| partOfCorridor |
Mission Boulevard
ⓘ
surface form:
Mission Boulevard corridor
|
| passesThrough |
Ashland, California
ⓘ
Cherryland, California ⓘ Fremont ⓘ
surface form:
Fremont, California
Hayward ⓘ
surface form:
Hayward, California
San Lorenzo, California ⓘ Union City, California ⓘ |
| region | East Bay ⓘ |
| role | major north–south arterial route ⓘ |
| routeNumber | 238 ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| terminusNorth |
Interstate 580
ⓘ
surface form:
Foothill Boulevard at I-580 in Castro Valley
Interstate 580 ⓘ
surface form:
Interstate 580 in Castro Valley
|
| terminusSouth |
Interstate 680
ⓘ
surface form:
Interstate 680 in Fremont
Mission Boulevard at I-680 in Fremont ⓘ |
| usedFor |
commuter traffic
ⓘ
local access ⓘ regional 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: California State Route 238 Description of subject: California State Route 238 is a state highway in the San Francisco Bay Area that serves as a major north–south arterial route through cities including Hayward in Alameda County.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.