@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_a_	skos:broader	isac:certain_problem_ .
isac:_challenge_	skos:broader	isac:certain_problem_ .
isac:_failure_	skos:broader	isac:certain_problem_ .
isac:_however_	skos:broader	isac:certain_problem_ .
isac:_one_	skos:broader	isac:certain_problem_ .
isac:_problem_	skos:broader	isac:certain_problem_ .
isac:_performance_	skos:broader	isac:certain_problem_ .
isac:_cost_	skos:broader	isac:certain_problem_ .
isac:_gas_	skos:broader	isac:certain_problem_ .
isac:_fact_	skos:broader	isac:certain_problem_ .
isac:_need_	skos:broader	isac:certain_problem_ .
isac:_research_	skos:broader	isac:certain_problem_ .
isac:_difficulty_	skos:broader	isac:certain_problem_ .
isac:_obesity_	skos:broader	isac:certain_problem_ .
isac:_following_	skos:broader	isac:certain_problem_ .