About: http://webisa.webdatacommons.org/183204514

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	Sources, including commercial sources, of Ta2O5 include tantalum oxide powders, tantalum containing ores (e.g., columbite, tantalite, and euxelite), tantalum salts, tantalum metals, and combinations thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au