(QT (DQL ``) (QTC (S (CC But) (S (SBAR (IN if) (S (BASENP (PRP we)) (VP (MD can) (VP (VB explain) (NP (NP (BASENP (DT the) (NNS sizes)) (PP (IN of) (BASENP (DT these) (JJ bloated) (NNS planets)))) (PP (IN in) (BASENP (PRPD their) (JJ harsh) (NNS environments)))))))) (COMMA ,) (S (BASENP (PRP it)) (VP (MD may) (VP (VB help) (S (BASENP (PRP us)) (VP (ADVP (RBR better)) (VP (VB understand) (NP (BASENP (PRPD our) (JJ own) (NNP Solar) (NNP System) (NNS planets)) (CC and) (BASENP (PRPD their) (NN formation))))))))))) (PERIOD .)) (DQR ''))