Premodifier: ph
Head noun: level

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

Narrower concepts

labelprovenanceconfidence
ph levelisap:3694423100.716595
acidic soilisap:950113390.405767
phisap:4649337140.174088
dietisap:859184680.154124
systemisap:1213225570.117005
contaminantisap:4152803310.088805
limeisap:849695520.081902