@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_substrate_	skos:broader	isac:flat_substrate_ .
isac:_paper_	skos:broader	isac:flat_substrate_ .
isac:_silicon_	skos:broader	isac:flat_substrate_ .
<http://webisa.webdatacommons.org/concept/_piece_of+paper>	skos:broader	isac:flat_substrate_ .
isac:silicon_wafer_	skos:broader	isac:flat_substrate_ .
isac:microscope_slide_	skos:broader	isac:flat_substrate_ .