<http://webisa.webdatacommons.org/prov/516188933>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/375120016> .
<http://webisa.webdatacommons.org/375120016>	<http://www.w3.org/ns/prov#value>	"N is any antiviral nucleoside having activity against hepatitis B, linked in a 5??? phosphodiester link, and A is a chalcogen (O, C or S)." .
<http://webisa.webdatacommons.org/prov/516193080>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/375120016> .
<http://webisa.webdatacommons.org/375120016>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/375120016>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.fr> .