@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
<http://webisa.webdatacommons.org/concept/_ruby_on+rails>	skos:broader	<http://webisa.webdatacommons.org/concept/open+source_stack_> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_mysql_	skos:broader	<http://webisa.webdatacommons.org/concept/open+source_stack_> .
isac:_tomcat_	skos:broader	<http://webisa.webdatacommons.org/concept/open+source_stack_> .