@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_element_	skos:broader	isac:sensor_element_ .
isac:light_source_	skos:broader	isac:sensor_element_ .
isac:acceleration_sensor_	skos:broader	isac:sensor_element_ .
isac:sensor_element_	skos:broader	isac:sensor_element_ .