<http://webisa.webdatacommons.org/274202985>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/299051303>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/274202985> .
<http://webisa.webdatacommons.org/274202985>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/274202985>	<http://www.w3.org/ns/prov#value>	"Preferably, R is an alkylene radical of from 2 to 4 carbon atoms." .