( ( haze ( , ( fog ( , ( and ( low ( stratus clouds ) ) ) ) ) ) ) ( ( may ( appear ( after ( a ( few days ) ) ) ) ) . ) )
(ROOT (S (NP (JJ haze) (, ,) (NN fog) (, ,) (CC and) (JJ low) (NN stratus) (NNS clouds)) (VP (MD may) (VP (VB appear) (PP (IN after) (NP (DT a) (JJ few) (NNS days))))) (. .)))
haze, fog, and low stratus clouds may appear after a few days.
(ROOT (S (NP (NNP Stratus) (NNS clouds)) (VP (VBP occur) (PP (IN in) (NP (NP (DT the) (NN low)) (PP (IN of) (NP (DT the) (NNP troposphere)))))) (. .)))