@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_neutron_	skos:broader	isac:basic_particle_ .
isac:_electron_	skos:broader	isac:basic_particle_ .
isac:_quark_	skos:broader	isac:basic_particle_ .