About: http://webisa.webdatacommons.org/419642543

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	Negative ion is found in nature, such as waterfalls or forests, concentrated 1 billion times.
http://www.w3.org/ns/prov#wasQuotedFrom	rakuten.com