( Cell Organelles )
(ROOT (NP (NNP Cell) (NNPS Organelles)))
Cell Organelles
(ROOT (S (NP (JJS Most) (NNS organelles)) (VP (VBP are) (RB not) (VP (VBN found) (PP (IN in) (NP (JJ prokaryotic) (NNS cells))))) (. .)))