About: http://webisa.webdatacommons.org/218827103

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	Therefore, these data can be formed into two kinds of patterns which are symmetrical with respect to the center of the transmitting and receiving aperture, owing to the construction shown in the drawing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com