@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_knob_	skos:broader	isac:continuous_controller_ .
isac:expression_pedal_	skos:broader	isac:continuous_controller_ .
isac:mod_wheel_	skos:broader	isac:continuous_controller_ .