About: ultra marathon

Premodifier: ultra
Head noun: marathon

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

Broader concepts

label	provenance	confidence
race	isap:383788352	0.430512
run	isap:349201304	0.294685

Narrower concepts

label	provenance	confidence
race	isap:460550057	0.141622