About: http://webisa.webdatacommons.org/104996366

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	Advanced aerospace systems occasionally require the use of very brittle materials such as sapphire and ultra-high temperature ceramics.
http://www.w3.org/ns/prov#wasQuotedFrom	science.gov