About: http://webisa.webdatacommons.org/392225007

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	Recently, this problem has become especially acute in rural areas of the under-developed world because of efforts to improve drinking water sources that unfortunately did not fully consider natural sources of arsenic.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov