About: http://webisa.webdatacommons.org/2997974

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 few building materials made of stone, such as granite countertops, have been found to emit radon, too.
http://www.w3.org/ns/prov#wasQuotedFrom	homeenergy.org