( ( ( oldest objects ) ( in ( ( ( the ( solar system ) ) ( -LRB- ( ( ( ( meteors ( , ( ( meteorites , ) asteroids ) ) ) , ) comets ) -RRB- ) ) ) 2 ) ) ) . )
(ROOT (NP (NP (JJS oldest) (NNS objects)) (PP (IN in) (NP (NP (DT the) (JJ solar) (NN system)) (PRN (-LRB- -LRB-) (NP (NNS meteors) (, ,) (NNS meteorites) (, ,) (FW asteroids)) (, ,) (NP (NNP comets)) (-RRB- -RRB-)) (NP (CD 2)))) (. .)))
oldest objects in the solar system (meteors, meteorites, asteroids, comets) 2.
(ROOT (S (NP (NP (NNS Meteorites)) (, ,) (VP (VBN formed) (PP (IN of) (NP (NN split) (NNS asteroids) (CC or) (NN planetary) (NNS rocks)))) (, ,)) (VP (VBP provide) (NP (NP (NNS clues)) (PP (IN about) (NP (PRP$ our) (JJ solar) (NN system))))) (. .)))