( ( Gestational diabetes ) ( ( most commonly ) ( ( ( ( resembles ( ( a ( mild form ) ) ( of ( Type ( II diabetes ) ) ) ) ) and ) ( may ( require ( only ( diet modification ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Gestational) (NNP diabetes)) (ADVP (RBS most) (RB commonly)) (VP (VP (VBZ resembles) (NP (NP (DT a) (JJ mild) (NN form)) (PP (IN of) (NP (NNP Type) (NNP II) (NNP diabetes))))) (CC and) (VP (MD may) (VP (VB require) (NP (JJ only) (NN diet) (NN modification))))) (. .)))
Gestational diabetes most commonly resembles a mild form of Type II diabetes and may require only diet modification.
(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.