About: air raid siren

Premodifier: air raid
Head noun: siren

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

Broader concepts

label	provenance	confidence
warning	isap:229540233	0.457621
thing	isap:368598480	0.244686

Narrower concepts

label	provenance	confidence
nothing	isap:31931118	0.110794