@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_ability_	skos:broader	isac:visual_function_ .
isac:visual_acuity_	skos:broader	isac:visual_function_ .
isac:_acuity_	skos:broader	isac:visual_function_ .
isac:_accommodation_	skos:broader	isac:visual_function_ .
isac:_zeaxanthin_	skos:broader	isac:visual_function_ .
isac:depth_perception_	skos:broader	isac:visual_function_ .
isac:contrast_sensitivity_	skos:broader	isac:visual_function_ .