About: http://webisa.webdatacommons.org/101416331

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	The grating is shown in FIG. 7B as a disk, but other shapes are contemplated, such as a square or rectangular.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com