WGS84
E16682
WGS84 is the global geodetic reference system and standard coordinate framework used for GPS and most modern mapping applications.
All labels observed (22)
How this entity was disambiguated
This entity first appeared as the object of triple T141496 — 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: WGS84 Context triple: [Harvard Square, hasCoordinateSystem, WGS84]
-
A.
Coordinated Universal Time
Coordinated Universal Time (UTC) is the primary global time standard by which the world regulates clocks and time, serving as the basis for most civil time zones.
-
B.
San Bernardino meridian
The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
-
C.
GMT
GMT (Greenwich Mean Time) is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the international civil time standard and the basis for modern time zones.
-
D.
National Geodetic Survey
The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
-
E.
DEM
DEM is the former official currency code for the Deutsche Mark, which was Germany’s national currency before the adoption of the euro.
- 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: WGS84 Target entity description: WGS84 is the global geodetic reference system and standard coordinate framework used for GPS and most modern mapping applications.
-
A.
Coordinated Universal Time
Coordinated Universal Time (UTC) is the primary global time standard by which the world regulates clocks and time, serving as the basis for most civil time zones.
-
B.
San Bernardino meridian
The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
-
C.
GMT
GMT (Greenwich Mean Time) is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the international civil time standard and the basis for modern time zones.
-
D.
National Geodetic Survey
The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
-
E.
DEM
DEM is the former official currency code for the Deutsche Mark, which was Germany’s national currency before the adoption of the euro.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
geodetic datum
ⓘ
geodetic reference system ⓘ global reference frame ⓘ |
| abbreviation |
WGS 84
ⓘ
linked to:
WGS84
|
| axis1Name | geodetic latitude ⓘ |
| axis2Name | geodetic longitude ⓘ |
| axis3Name | ellipsoidal height ⓘ |
| axisUnit |
degree
ⓘ
metre ⓘ |
| category | geodetic standards ⓘ |
| commonCRSCode | EPSG:4326 ⓘ |
| coordinateSystemType |
geocentric Cartesian
ⓘ
geographic 3D ⓘ |
| datumType | Earth-centered Earth-fixed ⓘ |
| developedBy |
United States Department of Defense
ⓘ
linked to:
Department of Defense
|
| dimension | 3D ⓘ |
| ellipsoid |
WGS84 ellipsoid
ⓘ
linked to:
WGS84
|
| epoch | 1984.0 ⓘ |
| flattening | 0.0033528106647474805 ⓘ |
| fullName |
World Geodetic System 1984
ⓘ
linked to:
WGS84
|
| heightReference | ellipsoidal height above WGS84 ellipsoid ⓘ |
| includes |
Earth gravity model
ⓘ
Earth-centered coordinate system ⓘ geoid model ⓘ reference ellipsoid ⓘ |
| initialDefinitionYear | 1984 ⓘ |
| inverseFlattening | 298.257223563 ⓘ |
| latitudeRange | −90 to +90 degree ⓘ |
| longitudeRange | −180 to +180 degree ⓘ |
| primeMeridian | Greenwich ⓘ |
| realizationEpoch | 1984 ⓘ |
| referenceFrame | ITRF-compatible ⓘ |
| regionOfUse | worldwide ⓘ |
| replaced | WGS72 ⓘ |
| scope | global ⓘ |
| semiMajorAxis | 6378137.0 metre ⓘ |
| standardizedBy |
NGA
ⓘ
U.S. Department of Defense ⓘ
linked to:
Department of Defense
|
| supports | global positioning accuracy at meter level or better ⓘ |
| timeDependent | true ⓘ |
| usedAs |
reference for GPS satellite orbits
ⓘ
reference for global digital maps ⓘ |
| usedBy |
Global Positioning System
ⓘ
linked to:
GPS
|
| usedFor |
geodesy
ⓘ
geographic information systems ⓘ global navigation ⓘ mapping ⓘ surveying ⓘ |
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: WGS84 Description of subject: WGS84 is the global geodetic reference system and standard coordinate framework used for GPS and most modern mapping applications.
Referenced by (1,436)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: WGS84
linked to: WGS84
linked to: WGS84
subject linked to:
Seething Lane, London
subject linked to:
Birán, Holguín Province, Cuba
linked to: WGS84
subject linked to:
Rue de Valois, Paris
linked to: WGS84
Riverview Cemetery (Trenton, New Jersey)
→
geographicCoordinateSystem
→
World Geodetic System 1984
ⓘ
subject linked to:
Riverview Cemetery, Trenton, New Jersey, United States
linked to: WGS84
linked to: WGS84
subject linked to:
Santpedor, Spain
linked to: WGS84
linked to: WGS84
subject linked to:
Tama Cemetery, Tokyo, Japan
linked to: WGS84
linked to: WGS84
linked to: WGS84
linked to: WGS84
linked to: WGS84