About: http://webisa.webdatacommons.org/422374553

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	Purification tablets purify water by using chemicals, and the most common in these tablets are iodine, chlorine, or potassium permanganate.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com