About: http://webisa.webdatacommons.org/342304482

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 filling material, such as aggregate, is then tamped into place with a fast sealant and dusted with grit to provide grip.
http://www.w3.org/ns/prov#wasQuotedFrom	newscientist.com