@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:signal_amplification_	skos:broader	<http://webisa.webdatacommons.org/concept/common+receiver_function_> .
isac:_filtering_	skos:broader	<http://webisa.webdatacommons.org/concept/common+receiver_function_> .
<http://webisa.webdatacommons.org/concept/_frequency_down+conversion>	skos:broader	<http://webisa.webdatacommons.org/concept/common+receiver_function_> .