@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix ui:  <http://lv2plug.in/ns/extensions/ui#> .

<http://zynaddsubfx.sourceforge.net#UI>
    lv2:extensionData ui:idleInterface ,
                      ui:showInterface ,
                      <http://kxstudio.sf.net/ns/lv2ext/programs#Interface> ;

    lv2:requiredFeature <http://lv2plug.in/ns/ext/options#options> ,
                        <http://lv2plug.in/ns/ext/urid#map> .

