About: http://webisa.webdatacommons.org/17003390

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	In addition, conventional playground equipment constructed from materials such as wood may be relatively heavy, which may make the playground equipment more difficult to install and more expensive to ship and transport.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com