@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:serial_interface_	skos:broader	<http://webisa.webdatacommons.org/concept/standard+computer_interface_> .
<http://webisa.webdatacommons.org/concept/_universal_serial+bus+usb>	skos:broader	<http://webisa.webdatacommons.org/concept/standard+computer_interface_> .