About: http://webisa.webdatacommons.org/46693500

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	It requires at least three to four months to test such filters as we need to use the filter for arsenic contaminated water from different areas to make sure that it filters arsenic in water from anywhere in the country, Mahmood said.
http://www.w3.org/ns/prov#wasQuotedFrom	sos-arsenic.net