( There ( ( are ( ( two ( main types ) ) ( of ( diabetes mellitus ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (JJ main) (NNS types)) (PP (IN of) (NP (NN diabetes) (NNS mellitus))))) (. .)))
There are two main types of diabetes mellitus.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (JJ different) (JJ main) (NNS types)) (PP (IN of) (NP (NN diabetes))))) (. .)))