About: http://webisa.webdatacommons.org/210256008

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	Although :the use of indicator papers is usually very convenient, particularly in the laboratory, in an operating plant too often the surfaces to be tested are not satisfactory for proper analysis by such means.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es