@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_server_	skos:broader	isac:computing_machine_ .
isac:_computer_	skos:broader	isac:computing_machine_ .
isac:personal_computer_	skos:broader	isac:computing_machine_ .
isac:turing_machine_	skos:broader	isac:computing_machine_ .
isac:_abacus_	skos:broader	isac:computing_machine_ .