<http://webisa.webdatacommons.org/prov/391272091>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/146195530> .
<http://webisa.webdatacommons.org/146195530>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/146195530>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<cpj.org> .
<http://webisa.webdatacommons.org/prov/306057390>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/146195530> .
<http://webisa.webdatacommons.org/146195530>	<http://www.w3.org/ns/prov#value>	"Poland's press law guarantees that journalists may maintain the confidentiality of their sources except in cases of treason, espionage and murder." .