About: http://webisa.webdatacommons.org/423272672

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 present invention provides an improved method, and relatively simple inexpensive structure for carrying out, or closing or modifying openings in structures such as buildings.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com