About: http://webisa.webdatacommons.org/405288331

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	A hybrid mattress combines a steel coil support system with one or more types of foam, such as polyurethane foam, memory (or visco elastic) foam, or latex foam, as well as foams that contain gel or other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	bettersleep.org