Improve references to GeoSPARQL #28
Description
Some references to GeoSPARQL are not great, for example, for the class https://w3id.org/gso/common/Spatial_Location, the comment says:
"... Use WKT strings (ogc:WKTLiteral, https://www.w3.org/2011/02/GeoSPARQL.pdf) as data values."
It should say:
"... Use WKT strings (geosparql:wktLiteral or other geometry serialization. See, https://opengeospatial.github.io/ogc-geosparql/geosparql11/spec.html) as data values."