( There ( ( are ( ( two ( main varieties ) ) ( of ( ( ( diabetes mellitus ) , ) ( ( known ( as ( type ( ( I and ) type ) ) ) ) II ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (JJ main) (NNS varieties)) (PP (IN of) (NP (NP (NN diabetes) (NNS mellitus)) (, ,) (NP (ADJP (VBN known) (PP (IN as) (NP (NN type) (NN I) (CC and) (NN type)))) (NNP II)))))) (. .)))
There are two main varieties of diabetes mellitus, known as type I and type II.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (JJ different) (JJ main) (NNS types)) (PP (IN of) (NP (NN diabetes))))) (. .)))