<http://webisa.webdatacommons.org/319280727>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<yang-sheng.com> .
<http://webisa.webdatacommons.org/prov/453968903>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/319280727> .
<http://webisa.webdatacommons.org/319280727>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/45980662>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/319280727> .
<http://webisa.webdatacommons.org/319280727>	<http://www.w3.org/ns/prov#value>	"During the Song Dynasty, some Taoists tried to use chemicals, such as mercury and lead, to become immortal." .