Update GeoPoint def

ontologies/gistCore.ttl

@@ -709,9 +709,9 @@ gist:GeoPoint
 			]
 		) ;
 	] ;
-	skos:definition "An individual point on the Earth's surface, identified by latitude, longitude, and altitude."^^xsd:string ;
+	skos:definition "An individual point in physical space identified by latitude, longitude and altitude. If altitude is missing, the point is assumed to be at the Earth's surface, and the altitude is the distance measured from sea level."^^xsd:string ;
 	skos:prefLabel "Geo Point"^^xsd:string ;
-	skos:scopeNote "If altitude is missing, it is assumed to be at the Earth's surface. However, altitude is measured from sea level. Assume coordinate system used by Google (WGS 84 Web Mercator using the GPS decimal lat/long)."^^xsd:string ;
+	skos:scopeNote "Assume coordinate system used by Google (WGS 84 Web Mercator using the GPS decimal lat/long)."^^xsd:string ;
 	.
 
 gist:GeoRegion