Head noun: composition
Postmodifier: of matter

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

Broader concepts

labelprovenanceconfidence
patent applicationisap:1306607620.596416
technologyisap:3132268230.378836
productisap:1380752720.289283
inventionisap:2780428500.287447
mixtureisap:1390059170.187429