<http://webisa.webdatacommons.org/prov/52653304>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/220304693> .
<http://webisa.webdatacommons.org/prov/124731255>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/220304693> .
<http://webisa.webdatacommons.org/220304693>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .
<http://webisa.webdatacommons.org/220304693>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/220304693>	<http://www.w3.org/ns/prov#value>	"To analyze the composition of the glass itself, characteristics such as density and color have traditionally been studied." .