About: http://webisa.webdatacommons.org/421943754

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	One preferred method of the present invention advantageously provides a means for producing microspheres in high yield from widely available and inexpensive starting materials, such as fly ash, natural rocks and minerals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com