About: http://webisa.webdatacommons.org/155393889

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	Though not visible in the figures, a rear wall opening or fastener such as double-sided tape may be provided to enable hanging invention 2 upon a vertical surface.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es