<http://webisa.webdatacommons.org/167307189>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/167307189>	<http://www.w3.org/ns/prov#value>	"Representative examples of an agent lacking a hydrophobic portion and having only a single charge are theophylline and caffeine," .
<http://webisa.webdatacommons.org/167307189>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/131431400>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/167307189> .