UriSchemes/z39.50r
"z39.50r" is uriReg:schemeName of [ dc:description """Z39.50 Retrieval"""; is uriReg:specifies of [ = <http://www.ics.uci.edu/pub/ietf/uri/rfc2056.txt>; dc:title """Uniform Resource Locators for Z39.50"""; dc:creator [ dca:agentName "R. Denenberg"], [dca:agentName "D. Lynch."], [dca:agentName "J. Kunze"]; inet:rfc "2056"; dc:date "1996-11"; ]; ] .
ProxyTopic; see IANA registry.----
See also other UriSchemes.
We're using NotationThree here, assuming TheUsualPrefixes.