( ( MARS Mars ) ( ( is ( ( fourth planet ) ( from ( the Sun ) ) ) ) . ) )
(ROOT (S (NP (NNP MARS) (NNP Mars)) (VP (VBZ is) (NP (NP (JJ fourth) (NN planet)) (PP (IN from) (NP (DT the) (NNP Sun))))) (. .)))
MARS Mars is fourth planet from the Sun.
(ROOT (S (NP (NNP Mars)) (VP (VBZ is) (NP (NP (DT the) (JJ fourth) (NN planet)) (PP (IN from) (NP (DT the) (NN sun))))) (. .)))