About: challenger explosion

Premodifier: challenger
Head noun: explosion

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

Broader concepts

label	provenance	confidence
national tragedy	isap:24102125	0.689089
news event	isap:15773297	0.670506
tragedy	isap:24102123	0.509499
disaster	isap:413460021	0.496758
moment	isap:134927699	0.402960

Narrower concepts

label	provenance	confidence