Head noun: n2o

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

Narrower concepts

labelprovenanceconfidence
oxygenisap:4036498820.232929
argonisap:3244507970.155984
noxisap:2817747830.119286
gasisap:2816329550.107100
soilisap:1268978960.062261