( ( ( ( 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 (DT The) (NN sun)) (VP (VBZ is) (NP (NP (DT the) (JJS largest) (NN body)) (PP (IN in) (NP (DT the) (JJ solar) (NN system))))) (. .)))