@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:laptop_computer_	skos:broader	<http://webisa.webdatacommons.org/concept/mobile+computing_system_> .
<http://webisa.webdatacommons.org/concept/personal+digital+assistant_pda_>	skos:broader	<http://webisa.webdatacommons.org/concept/mobile+computing_system_> .