About: http://webisa.webdatacommons.org/237123066

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	silicic acid.Crude drugs have been used in medical treatment since ancient time but their quality has been mostly confirmed only by means of empirical extracting methods for many years.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com