CONCEPTShttp://linkeddata.ge.imati.cnr.it:2020/resource/EARTh/89600linkeddata.ge.imati.cnr.ithttp://lod.nal.usda.gov/nalt/137381lod.nal.usda.govhttp://www.eionet.europa.eu/gemet/concept/91www.eionet.europa.eu。