About: quartz sand

Premodifier: quartz
Head noun: sand

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

Broader concepts

label	provenance	confidence
natural ore	isap:129307715	0.799556
ore	isap:129307713	0.612928
material	isap:454891476	0.604476
filler	isap:303540687	0.387473

Narrower concepts

label	provenance	confidence