About: air defense system

Premodifier: air defense
Head noun: system

Same concepts
http://dbpedia.org/resource/Anti-aircraft_warfare

Broader concepts

label	provenance	confidence
important target	isap:393763264	0.741053
weapon	isap:398137896	0.461930
arm	isap:402981330	0.397643
effort	isap:386538851	0.271259

Narrower concepts

label	provenance	confidence
s-300	isap:155069863	0.818855
s-400	isap:156397738	0.345703
patriot	isap:273818120	0.337646
missile	isap:268067518	0.244244
radar	isap:156874635	0.225631