About: important source of revenue

Premodifier: important
Head noun: source
Postmodifier: of revenue

Same concepts

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
same time	isap:307816639	0.505922
custom duty	isap:303282522	0.501825
excise duty	isap:303282521	0.395101
advertising	isap:143635978	0.369484
event	isap:165153435	0.230288
school	isap:390314948	0.192897