@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_sunday_	skos:broader	isac:unexpected_delay_ .
isac:_weather_	skos:broader	isac:unexpected_delay_ .
isac:_winter_	skos:broader	isac:unexpected_delay_ .
isac:_traffic_	skos:broader	isac:unexpected_delay_ .