( ( Planet ( Mars Mars ) ) ( ( ( ( is ( ( the ( fourth planet ) ) ( from ( the sun ) ) ) ) and ) ( is ( most ( like Earth ) ) ) ) . ) )
(ROOT (S (NP (NNP Planet) (NNP Mars) (NNP Mars)) (VP (VP (VBZ is) (NP (NP (DT the) (JJ fourth) (NN planet)) (PP (IN from) (NP (DT the) (NN sun))))) (CC and) (VP (VBZ is) (NP (NP (JJS most)) (PP (IN like) (NP (NNP Earth)))))) (. .)))
Planet Mars Mars is the fourth planet from the sun and is most like Earth.
(ROOT (S (NP (NNP Mars)) (VP (VBZ is) (NP (NP (DT the) (JJ fourth) (NN planet)) (PP (IN from) (NP (DT the) (NN sun))))) (. .)))