About: mass extinction event

Premodifier: mass extinction
Head noun: event

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

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
dinosaur	isap:364076893	0.449140
end of the triassic	isap:468436641	0.359574
year	isap:87574706	0.344698
whenever	isap:361561109	0.301764