<http://webisa.webdatacommons.org/232615102>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/389616753>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/232615102> .
<http://webisa.webdatacommons.org/232615102>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/232615102>	<http://www.w3.org/ns/prov#value>	"It should be understood that antigravity devices 1563, 1566 may be devices other than piston arrangements." .