About: http://webisa.webdatacommons.org/378336016

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	An opening around a sump pump or drain is another fairly common way radon can infiltrate a home, as is a crawl space.
http://www.w3.org/ns/prov#wasQuotedFrom	radonsystem.com