About: http://webisa.webdatacommons.org/333266177

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	Kent is more and expert in this area but some RR companies would grandfather some of these watch types in to the rules and allow them to continue to be used as long as they met required specifications for time keeping.
http://www.w3.org/ns/prov#wasQuotedFrom	nawcc.org