About: cygnus x-1

Premodifier: cygnus
Head noun: x-1

Same concepts
http://dbpedia.org/resource/Cygnus_X-1

Broader concepts

label	provenance	confidence
black hole	isap:250190440	0.653147
binary system	isap:210815946	0.574627
object	isap:214307236	0.515344
source	isap:212628082	0.366908

Narrower concepts

label	provenance	confidence