Premodifier: mushroom
Head noun: compost

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

Broader concepts

labelprovenanceconfidence
organic matterisap:2714297250.750553
compostisap:4368969130.545057
typeisap:740750750.408344

Narrower concepts

labelprovenanceconfidence
mulchisap:2295818800.135136