( ( ( ( The ( solar ( system-the sun ) ) ) and ) its ) ( ( planets-is ( a ( classical ( n-body problem ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ solar) (JJ system-the) (NN sun)) (CC and) (NP (PRP$ its))) (VP (VBZ planets-is) (NP (DT a) (JJ classical) (JJ n-body) (NN problem))) (. .)))
The solar system-the sun and its planets-is a classical n-body problem.
(ROOT (S (NP (NP (DT The) (JJS largest) (NN body)) (PP (IN in) (NP (PRP$ our) (JJ solar) (NN system)))) (VP (VBZ is) (NP (DT the) (NN sun))) (. .)))