Washington State Route 18
E169964
Washington State Route 18 is a major east–west highway in western Washington that connects the Seattle–Tacoma metropolitan area to Interstate 90 near Snoqualmie.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Washington State Route 18 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1190937 — 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: Washington State Route 18 Context triple: [Federal Way, Washington, majorHighway, Washington State Route 18]
-
A.
Oregon Route 8
Oregon Route 8 is a state highway in northwestern Oregon that runs through the Tualatin Valley, connecting several suburban communities west of Portland.
-
B.
Oregon Route 38
Oregon Route 38 is a state highway in Oregon that runs east–west between the coast and Interstate 5, following the Umpqua River and serving as a key route through Douglas County.
-
C.
Oregon Route 99W
Oregon Route 99W is a state highway in western Oregon that runs through the Willamette Valley, serving as a major north–south route parallel to Interstate 5.
-
D.
Oregon Route 213
Oregon Route 213 is a state highway in Oregon that runs through the Portland metropolitan area, connecting several communities including Gresham and serving as a key north–south transportation corridor.
-
E.
Oregon Route 34
Oregon Route 34 is a state highway in western Oregon that connects the central Willamette Valley to the central Oregon Coast, passing through communities such as Corvallis.
- 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: Washington State Route 18 Target entity description: Washington State Route 18 is a major east–west highway in western Washington that connects the Seattle–Tacoma metropolitan area to Interstate 90 near Snoqualmie.
-
A.
Oregon Route 8
Oregon Route 8 is a state highway in northwestern Oregon that runs through the Tualatin Valley, connecting several suburban communities west of Portland.
-
B.
Oregon Route 38
Oregon Route 38 is a state highway in Oregon that runs east–west between the coast and Interstate 5, following the Umpqua River and serving as a key route through Douglas County.
-
C.
Oregon Route 99W
Oregon Route 99W is a state highway in western Oregon that runs through the Willamette Valley, serving as a major north–south route parallel to Interstate 5.
-
D.
Oregon Route 213
Oregon Route 213 is a state highway in Oregon that runs through the Portland metropolitan area, connecting several communities including Gresham and serving as a key north–south transportation corridor.
-
E.
Oregon Route 34
Oregon Route 34 is a state highway in western Oregon that connects the central Willamette Valley to the central Oregon Coast, passing through communities such as Corvallis.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
limited-access highway
ⓘ
state highway ⓘ |
| abbreviation | SR 18 ⓘ |
| category |
State highways in Washington (state)
ⓘ
Transportation in King County, Washington ⓘ Transportation in Pierce County, Washington ⓘ |
| connectsTo |
Interstate 5
ⓘ
Interstate 90 ⓘ State Route 164 ⓘ State Route 167 ⓘ State Route 169 ⓘ State Route 99 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| easternTerminus | Interstate 90 near Snoqualmie ⓘ |
| function | regional connector between Seattle–Tacoma area and Interstate 90 ⓘ |
| hasDirectionA | West ⓘ |
| hasDirectionB | East ⓘ |
| hasJunctionWith |
State Route 164 near Auburn
ⓘ
State Route 167 ⓘ
surface form:
State Route 167 in Auburn
State Route 169 near Maple Valley ⓘ |
| highwaySystem |
Washington State Routes
ⓘ
surface form:
Washington State Route system
|
| isKnownFor |
collision history, especially near Tiger Mountain (historically)
ⓘ
heavy traffic volumes ⓘ |
| isPartially |
expressway
ⓘ
freeway ⓘ |
| locatedIn |
King County
ⓘ
surface form:
King County, Washington
Pierce County ⓘ
surface form:
Pierce County, Washington
Snoqualmie Valley region ⓘ western Washington ⓘ |
| maintainedBy | Washington State Department of Transportation ⓘ |
| openedAs | series of segments built over multiple decades ⓘ |
| orientation | east–west ⓘ |
| partOfMetropolitanArea |
Seattle–Tacoma urban corridor
ⓘ
surface form:
Seattle–Tacoma metropolitan area
|
| passesNear |
Auburn, Washington
ⓘ
Covington, Washington ⓘ Hobart, Washington ⓘ Maple Valley, Washington ⓘ Snoqualmie, Washington ⓘ |
| passesThrough |
Tiger Mountain
ⓘ
surface form:
Tiger Mountain area
|
| regionServed |
Eastside of King County
ⓘ
surface form:
Eastside of the Seattle metropolitan area
King County ⓘ
surface form:
South King County
|
| routeNumber | 18 ⓘ |
| runsFrom |
Federal Way, Washington, United States
ⓘ
surface form:
Federal Way, Washington
|
| state | Washington ⓘ |
| westernTerminus |
Interstate 5 in Federal Way
ⓘ
Washington State Route 99 ⓘ
surface form:
State Route 99 in Federal Way
|
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: Washington State Route 18 Description of subject: Washington State Route 18 is a major east–west highway in western Washington that connects the Seattle–Tacoma metropolitan area to Interstate 90 near Snoqualmie.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Federal Way, Washington