About: ground-level ozone

Premodifier: ground-level
Head noun: ozone

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

Broader concepts

label	provenance	confidence
air pollutant	isap:335096529	0.907342
common air pollutant	isap:335096574	0.791119
key component of smog	isap:337481612	0.710376
major air pollutant	isap:335096590	0.691917
air quality standard naaqs	isap:365891539	0.679449
secondary pollutant	isap:335096556	0.638928
pollutant	isap:335096533	0.599048
air pollution	isap:339797009	0.599038
air toxic	isap:367480281	0.595027
mixture of pollutant	isap:222407096	0.573569
air pollution problem	isap:222684177	0.536626
air quality	isap:230834084	0.471860
gas	isap:324081673	0.430990
issue	isap:367711610	0.394921

Narrower concepts

label	provenance	confidence
methane	isap:39440825	0.444918
gas	isap:466095036	0.131296