<http://webisa.webdatacommons.org/174821659>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/140621075>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/174821659> .
<http://webisa.webdatacommons.org/174821659>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/174821659>	<http://www.w3.org/ns/prov#value>	"an ???SO2Rx; where Rb is a hydrogen or a C1 to C6 alkyl, and n is 0 or 1;" .