( ( ( Pluto and ) Mercury ) ( ( are ( ( the planets ) ( with ( ( the ( ( most eccentric ) orbits ) ) ( in ( our ( solar system ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Pluto) (CC and) (NNP Mercury)) (VP (VBP are) (NP (NP (DT the) (NNS planets)) (PP (IN with) (NP (NP (DT the) (ADJP (RBS most) (JJ eccentric)) (NNS orbits)) (PP (IN in) (NP (PRP$ our) (JJ solar) (NN system))))))) (. .)))
Pluto and Mercury are the planets with the most eccentric orbits in our solar system.
(ROOT (S (NP (NNP Mercury)) (VP (VBZ is) (NP (NP (DT the) (JJS smallest) (NN planet)) (PP (IN in) (NP (PRP$ our) (JJ solar) (NN system))))) (. .)))