of mexico 's most colorful and controversial artists 
(ROOT (PP (IN of) (NP (NP (NNP mexico) (POS 's)) (ADJP (RBS most) (JJ colorful) (CC and) (JJ controversial)) (NNS artists))))
(ROOT (PP (IN ) (NP (NP (NNP ) (POS )) (ADJP (RBS ) (JJ ) (CC ) (JJ )) (NNS ))))