@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_cleaning_	skos:broader	isac:maintenance_function_ .
isac:_hvac_	skos:broader	isac:maintenance_function_ .
isac:_machine_	skos:broader	isac:maintenance_function_ .
isac:_temperature_	skos:broader	isac:maintenance_function_ .
isac:_repair_	skos:broader	isac:maintenance_function_ .
isac:_function_	skos:broader	isac:maintenance_function_ .
isac:_diagnostic_	skos:broader	isac:maintenance_function_ .
isac:_scheduling_	skos:broader	isac:maintenance_function_ .