About: http://webisa.webdatacommons.org/235749704

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	In the conventional technique, however, there is a problem that it is extremely difficult to generate a device using thin crystal having a thickness of mm order or less and the electro-optic crystal becomes apt to break.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com