Head noun: round
Postmodifier: the world

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

Broader concepts

labelprovenanceconfidence
thingisap:3685410870.160319
partisap:1968048290.143519

Narrower concepts

labelprovenanceconfidence
countryisap:361285160.275671
usaisap:4709033370.262374
japanisap:3680960450.223620