@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_problem_	skos:broader	isac:technological_problem_ .
isac:_right_	skos:broader	isac:technological_problem_ .
isac:_technology_	skos:broader	isac:technological_problem_ .
isac:_pollution_	skos:broader	isac:technological_problem_ .
isac:_virus_	skos:broader	isac:technological_problem_ .
isac:computer_difficulty_	skos:broader	isac:technological_problem_ .