<http://webisa.webdatacommons.org/prov/172879524>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/453190636> .
<http://webisa.webdatacommons.org/453190636>	<http://www.w3.org/ns/prov#value>	"Those modifications included using specially designed spark plugs and alternate materials for valve seats and other parts that may become brittle when exposed to hydrogen." .
<http://webisa.webdatacommons.org/453190636>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/453190636>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nrel.gov> .