<http://webisa.webdatacommons.org/149848194>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/149848194>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/44773412>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/149848194> .
<http://webisa.webdatacommons.org/149848194>	<http://www.w3.org/ns/prov#value>	"A portion of the air then flows through an orifice 156 in a wall 158 into the space between the thyratron 142 and an insulating chimney 160 made from a suitable material such as a ceramic." .