Currently PopulationCoverage is modelled to have type sio:SIO_001166 that can have the values ["National" "International" "Regional"]. A potential problem with this modelling is that the meanings of National, International and Regional are not well defined. It may be better to add these as concepts to the EJPRD ontology, possibly extending http://purl.org/dc/terms/spatial.
Currently
PopulationCoverageis modelled to have typesio:SIO_001166that can have the values["National" "International" "Regional"]. A potential problem with this modelling is that the meanings ofNational,InternationalandRegionalare not well defined. It may be better to add these as concepts to the EJPRD ontology, possibly extendinghttp://purl.org/dc/terms/spatial.