Southern Expressway
E571795
The Southern Expressway is a major controlled-access highway in Sri Lanka that connects the capital region with key southern cities, significantly reducing travel time and boosting regional development.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Southern Expressway canonical | 7 |
| Southern Expressway (via connecting roads) | 1 |
| Southern Expressway (via extensions) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6104109 — 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: Southern Expressway Context triple: [Western Province, Sri Lanka, hasMajorHighway, Southern Expressway]
-
A.
Northern Expressway
Northern Expressway is a major segment of Interstate 93 in the northeastern United States, serving as a key highway corridor through the Boston metropolitan area.
-
B.
Southeast Expressway
The Southeast Expressway is a major freeway segment in the Boston, Massachusetts area that carries heavy commuter traffic between the city and its southern suburbs.
-
C.
Central Expressway
Central Expressway is a major north–south highway in the Dallas–Fort Worth area that serves as a key transportation artery through the region’s high-tech Telecom Corridor.
-
D.
Hunter Expressway
Hunter Expressway is a major freeway in New South Wales, Australia, that provides a high-speed link between Newcastle and the Hunter Valley region.
-
E.
North Central Expressway
North Central Expressway is a major freeway in Dallas, Texas, forming part of U.S. Route 75 and serving as a key north–south transportation corridor through the city and its northern suburbs.
- 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: Southern Expressway Target entity description: The Southern Expressway is a major controlled-access highway in Sri Lanka that connects the capital region with key southern cities, significantly reducing travel time and boosting regional development.
-
A.
Northern Expressway
Northern Expressway is a major segment of Interstate 93 in the northeastern United States, serving as a key highway corridor through the Boston metropolitan area.
-
B.
Southeast Expressway
The Southeast Expressway is a major freeway segment in the Boston, Massachusetts area that carries heavy commuter traffic between the city and its southern suburbs.
-
C.
Central Expressway
Central Expressway is a major north–south highway in the Dallas–Fort Worth area that serves as a key transportation artery through the region’s high-tech Telecom Corridor.
-
D.
Hunter Expressway
Hunter Expressway is a major freeway in New South Wales, Australia, that provides a high-speed link between Newcastle and the Hunter Valley region.
-
E.
North Central Expressway
North Central Expressway is a major freeway in Dallas, Texas, forming part of U.S. Route 75 and serving as a key north–south transportation corridor through the city and its northern suburbs.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
controlled-access highway
ⓘ
expressway ⓘ |
| accessControl | fully controlled-access ⓘ |
| connects |
Colombo metropolitan region
ⓘ
linked to:
Colombo Metropolitan Region
Galle ⓘ Hambantota District ⓘ Matara ⓘ
linked to:
Matara, Sri Lanka
|
| country | Sri Lanka ⓘ |
| endPoint | Hambantota area ⓘ |
| hasFeature |
emergency lanes
ⓘ
grade-separated interchanges ⓘ overpasses and underpasses ⓘ toll plazas ⓘ |
| hasImpact |
improved connectivity to southern Sri Lanka
ⓘ
reduced travel time between Colombo and Galle ⓘ reduced travel time between Colombo and Matara ⓘ |
| hasJunctionWith |
Colombo–Matara road network
ⓘ
linked to:
Colombo–Matara main road
Outer Circular Expressway ⓘ |
| hasLaneConfiguration | multiple lanes in each direction ⓘ |
| hasServiceType | motor vehicles only ⓘ |
| isMajorTransportCorridorFor |
freight traffic
ⓘ
passenger traffic ⓘ |
| languageOfOfficialName |
Sinhala
ⓘ
Tamil ⓘ |
| locatedIn |
Southern Province, Sri Lanka
ⓘ
Western Province, Sri Lanka ⓘ |
| maintainedBy | Road Development Authority of Sri Lanka ⓘ |
| openedInPart | 2011 ⓘ |
| partOf | Sri Lanka expressway network ⓘ |
| purpose |
boost regional development in southern Sri Lanka
ⓘ
reduce travel time between Colombo and southern cities ⓘ |
| regionServed |
Colombo region
ⓘ
Southern Sri Lanka ⓘ |
| roadType | dual carriageway ⓘ |
| startPoint | Kottawa ⓘ |
| supportsEconomicActivity |
tourism in southern Sri Lanka
ⓘ
trade and logistics in southern Sri Lanka ⓘ |
| tollRoad | yes ⓘ |
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: Southern Expressway Description of subject: The Southern Expressway is a major controlled-access highway in Sri Lanka that connects the capital region with key southern cities, significantly reducing travel time and boosting regional development.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Southern Expressway
linked to: Southern Expressway