About: http://webisa.webdatacommons.org/151679052

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 an attempt to provide users with comfortable beds, bed manufacturers may use metal springs, foam layers, solid foam blocks, water, air, or other means to provide various types of firmness to a user.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au