About: http://webisa.webdatacommons.org/332708884

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	Also present may be such other elements as zinc, copper, magnesium, nickel, lead or arsenic, albeit same are present in smaller amounts, particularly in the case of residual acid solutions resulting from an ilmenite attack process.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com