About: cassiopeia a

Premodifier: cassiopeia
Head noun: a

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

Broader concepts

label	provenance	confidence
massive star	isap:216327443	0.637600
supernova remnant	isap:300007748	0.476189
supernova	isap:502505047	0.404854

Narrower concepts

label	provenance	confidence