About: http://webisa.webdatacommons.org/299084271

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	Reference numeral 20 denotes a terminal for external connection, formed for example of kovar, erected in a hole formed in the stem 30 with an insulator such as glass interposed therebetween.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com