( ( ( ( Type 1 ) and ) ( type ( 2 diabetes ) ) ) ( ( are ( ( the ( primary forms ) ) ( of ( the disease ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Type) (CD 1)) (CC and) (NP (NN type) (CD 2) (NN diabetes))) (VP (VBP are) (NP (NP (DT the) (JJ primary) (NNS forms)) (PP (IN of) (NP (DT the) (NN disease))))) (. .)))
Type 1 and type 2 diabetes are the primary forms of the disease.
(ROOT (S (NP (NNP Diabetes)) (VP (VP (VBZ is) (ADJP (JJ unpreventable) (PP (IN in) (NP (DT the) (NN type) (CD one) (NN form))))) (CC but) (VP (MD may) (VP (VB be) (VP (VBN prevented) (PP (IN by) (NP (NN diet))) (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ is) (PP (IN of) (NP (DT the) (JJ second) (NN type)))))))))) (. .)))
Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.