<http://webisa.webdatacommons.org/388087671>	<http://www.w3.org/ns/prov#value>	"Questions remain mainly concerning safety and long-term durability, which have to be assessed." .
<http://webisa.webdatacommons.org/388087671>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/102256628>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/388087671> .
<http://webisa.webdatacommons.org/388087671>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<ulg.ac.be> .