<http://webisa.webdatacommons.org/prov/100722164>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/190260535> .
<http://webisa.webdatacommons.org/190260535>	<http://www.w3.org/ns/prov#value>	"materials, bamboo is the most challenging material" .
<http://webisa.webdatacommons.org/prov/61168471>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/190260535> .
<http://webisa.webdatacommons.org/190260535>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<troutrods.com> .
<http://webisa.webdatacommons.org/190260535>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .