About: http://webisa.webdatacommons.org/397873420

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	However, many known cordierite compositions contain impurities, such as alkali metals and/or transition metals, which degrade dielectric properties.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es