About: http://webisa.webdatacommons.org/194853399

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	Moreover, balloons that are fine hollow spheres composed of oxide-based ceramics, and a pore-forming agent such as spherical acrylic particles and graphite, may be added to the above-mentioned material paste, if necessary.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com