About: amateur radio operator

Premodifier: amateur radio
Head noun: operator

Same concepts
http://dbpedia.org/resource/Amateur_radio_operator

Broader concepts

label	provenance	confidence
hobbyist	isap:59705022	0.594669
device	isap:484969492	0.496167
volunteer	isap:184537414	0.490903
people	isap:481579133	0.402573

Narrower concepts

label	provenance	confidence
member	isap:102809045	0.332373
hunting	isap:47114538	0.289670