About: multitasking operating system

Premodifier: multitasking operating
Head noun: system

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

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
os/2	isap:303958461	0.356862
unix	isap:309635973	0.341513
linux	isap:158881977	0.288328