About: http://webisa.webdatacommons.org/201524853

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	As such, now the only companies that may make repairs or alterations to boilers or pressure vessels is a company that holds a National Board ???R??? certificate.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net