(SINV (SINV (QT (DQL ``) (QTC (S (NP (BASENP (JJ Any) (NN time)) (SBAR (S (BASENP (PRP you)) (VP (VBP have) (NP (BASENP (DT a) (JJ significant) (NN change)) (PP (IN in) (BASENP (NN air) (NN mass)))))))) (S (BASENP (EX there)) (VP (VBZ is) (VP (VBG going) (S (VP (TO to) (VP (VB be) (NP (BASENP (JJ unsettled) (NN weather)) (VP (VBG marking) (BASENP (DT the) (NN two) (JJ different) (NN air) (NNS masses))))))))))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (NP (BASENP (NNP Joe) (NNP Sellers)) (COMMA ,) (NP (BASENP (DT a) (NN meteorologist)) (PP (IN from) (NP (BASENP (DT the) (NNP National) (NNP Weather) (NNP Service)) (PP (IN in) (BASENP (NNP Oklahoma))))))))) (PERIOD .))