( ( ( The ( Po Valley ) ) ( ( ( has ( ( ( a ( mild ( continental climate ) ) ) and ) ( a ( humid ( subtropical climate ) ) ) ) ) , ) ( depending ( on ( ( the part ) ( of ( the valley ) ) ) ) ) ) ) ( one ( ( is ( referring to ) ) . ) ) )
(ROOT (S (S (NP (DT The) (NNP Po) (NNP Valley)) (VP (VBZ has) (NP (NP (DT a) (JJ mild) (JJ continental) (NN climate)) (CC and) (NP (DT a) (JJ humid) (JJ subtropical) (NN climate))) (, ,) (PP (VBG depending) (PP (IN on) (NP (NP (DT the) (NN part)) (PP (IN of) (NP (DT the) (NN valley)))))))) (NP (PRP one)) (VP (VBZ is) (VP (VBG referring) (PP (TO to)))) (. .)))
The Po Valley has a mild continental climate and a humid subtropical climate, depending on the part of the valley one is referring to.
(ROOT (S (NP (PRP One)) (VP (MD might) (VP (VB find) (NP (JJ deciduous) (NNS trees)) (PP (IN in) (NP (DT a) (JJ humid) (JJ continental) (NN climate))))) (. .)))