About: http://webisa.webdatacommons.org/179854727

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	As described above, the standard position of the objective lens 20 in this example is a position where the optical axis Ax of the objective lens 20 is set perpendicular to an ideal object surface (a flat surface).
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk