( ( Iguassu Falls ) ( ( are ( ( the largest ) ( in ( ( the world ) ( ( a MUST ) SEE ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Iguassu) (NNP Falls)) (VP (VBP are) (NP (NP (DT the) (JJS largest)) (PP (IN in) (NP (NP (DT the) (NN world)) (SBAR (S (NP (DT a) (NN MUST)) (VP (VBP SEE)))))))) (. .)))
Iguassu Falls are the largest in the world a MUST SEE.
(ROOT (S (NP (NNP Iguassu) (NNP falls)) (VP (VBZ is) (NP (NP (DT the) (JJS largest) (NN waterfall)) (PP (IN on) (NP (DT the) (NN planet))))) (. .)))