About: difficulty sleeping

Premodifier: difficulty
Head noun: sleeping

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

Broader concepts

label	provenance	confidence
symptom	isap:345735439	0.817534
side effect	isap:486366174	0.717698
other symptom	isap:345735442	0.699755
depression	isap:182361903	0.595504
issue	isap:360539814	0.571174
sign	isap:376932063	0.546417
problem	isap:342843824	0.496321
condition	isap:186426402	0.465568

Narrower concepts

label	provenance	confidence
insomnia	isap:56913342	0.382126
night	isap:296901696	0.153841