About: http://webisa.webdatacommons.org/363196354

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	A byproduct of the extraction of oxygen from lunar minerals may be metals and semiconductors such as magnesium, iron, and silicon.
http://www.w3.org/ns/prov#wasQuotedFrom	nasa.gov