<http://webisa.webdatacommons.org/prov/208475393>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/143011647> .
<http://webisa.webdatacommons.org/143011647>	<http://www.w3.org/ns/prov#value>	"In particular the AP-SWNTs contain metal catalyst (nickel and yttrium), nanoparticles (carbonaceous particles sometimes containing metals), graphite, amorphous carbon, fullerenes and other contaminants." .
<http://webisa.webdatacommons.org/143011647>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/451656359>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/143011647> .
<http://webisa.webdatacommons.org/143011647>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .