<http://webisa.webdatacommons.org/441591000>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/441591000>	<http://www.w3.org/ns/prov#value>	"Assuming that the shape of the surface r6 is expressed by: ##EQU16## where k is a conic constant and c is a curvature of the surface, then ##EQU17##" .
<http://webisa.webdatacommons.org/prov/516206863>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/441591000> .
<http://webisa.webdatacommons.org/441591000>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .