( ( ( ( Jupiter ( , ( Saturn ( , ( Uranus ( , ( Neptune , ) ) ) ) ) ) ) and ) Pluto ) ( ( are ( the ( Outer Planets ) ) ) . ) )
(ROOT (S (NP (NP (NNP Jupiter) (, ,) (NNP Saturn) (, ,) (NNP Uranus) (, ,) (NNP Neptune) (, ,)) (CC and) (NP (NNP Pluto))) (VP (VBP are) (NP (DT the) (NNP Outer) (NNPS Planets))) (. .)))
Jupiter, Saturn, Uranus, Neptune, and Pluto are the Outer Planets.
(ROOT (S (NP (NNS Uranus)) (VP (VBZ is) (NP (DT the) (ADJP (JJS least) (JJ massive)) (JJ outer) (NN planet))) (. .)))