About: http://webisa.webdatacommons.org/91311105

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	One of the most difiicult problems in handling cementitious materials, such as cement, sand or other aggregate and water, is to thoroughly intermix the ingredients prior to application.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com