the mess that is world traveler 
(ROOT (NP (NP (DT the) (NN mess)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (NP (NN world) (NN traveler)))))))
(ROOT (NP (NP (DT ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (NN ) (NN )))))))