@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_sun_	skos:broader	isac:variable_star_ .
isac:_star_	skos:broader	isac:variable_star_ .
isac:_nebula_	skos:broader	isac:variable_star_ .
isac:_algol_	skos:broader	isac:variable_star_ .
isac:_cepheid_	skos:broader	isac:variable_star_ .
isac:_mira_	skos:broader	isac:variable_star_ .
isac:rr_lyrae_	skos:broader	isac:variable_star_ .
isac:cepheid_variable_	skos:broader	isac:variable_star_ .