( There ( ( are ( ( six ( different types ) ) ( of ( simple machines ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (JJ different) (NNS types)) (PP (IN of) (NP (JJ simple) (NNS machines))))) (. .)))
There are six different types of simple machines.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS types) (NNS types)) (PP (IN of) (NP (JJ simple) (NNS machines))))) (. .)))