<http://webisa.webdatacommons.org/prov/39623334>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/306898214> .
<http://webisa.webdatacommons.org/306898214>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/306898214>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/465350668>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/306898214> .
<http://webisa.webdatacommons.org/306898214>	<http://www.w3.org/ns/prov#value>	"The polymers of the invention comprise one or more units of formula (I) in the backbone: ???C(???O)R1???X???R2???X???R1???C(???O)???O??????(I) wherein each R1 is group that will provide a therapeutically active compound upon hydrolysis of the polymer; each X is independently an amide linkage, a thioester linkage, or an ester linkage; and R2 is a linking group; provided that the therapeutically act" .