About: call letter

Premodifier: call
Head noun: letter

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

Broader concepts

label	provenance	confidence
station information	isap:451953003	0.737057
information	isap:451952947	0.526465

Narrower concepts

label	provenance	confidence
legal id	isap:107096700	0.418877