About: http://webisa.webdatacommons.org/29999387

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	FIG. 6a is an illustration, partly in section, corresponding to FIG. 4a, of a third embodiment of a screw shaft;
http://www.w3.org/ns/prov#wasQuotedFrom	google.es