About: http://webisa.webdatacommons.org/444628147

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	The amount of radon in the air is measured in ???picocuries of radon per liter of air,??? or ???pCi/L.??? Sometimes test results are expressed in Working Levels, ???WL,??? rather than picocuries per liter of air.
http://www.w3.org/ns/prov#wasQuotedFrom	radonsystem.com