@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_datum_	skos:broader	isac:a_database_ .
isac:_record_	skos:broader	isac:a_database_ .
isac:_literature_	skos:broader	isac:a_database_ .
isac:_table_	skos:broader	isac:a_database_ .