<http://webisa.webdatacommons.org/30300909>	<http://www.w3.org/ns/prov#value>	"Among the polymers of olefins having the formula R--CH???CH2 where R is an aryl radical, crystal and shock-resistant polystyrene are preferred." .
<http://webisa.webdatacommons.org/prov/299051308>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/30300909> .
<http://webisa.webdatacommons.org/30300909>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/30300909>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .