<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://premon.fbk.eu/ontology/pb#core> "1"^^<http://www.w3.org/2001/XMLSchema#boolean> .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://premon.fbk.eu/ontology/pb#argument> <http://premon.fbk.eu/ontology/pb#arg1> .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://www.w3.org/2004/02/skos/core#definition> "challenging thing"@en .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://premon.fbk.eu/ontology/pb#tag> <http://premon.fbk.eu/ontology/pb#tag-pag> .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://premon.fbk.eu/ontology/pb#SemanticRole> .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://premon.fbk.eu/ontology/core#SemanticRole> .
<http://premon.fbk.eu/resource/pb31-difficult.01@arg1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2004/02/skos/core#Concept> .