( ( The Sun ) ( ( is ( ( the ( biggest object ) ) ( in ( our ( solar system ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sun)) (VP (VBZ is) (NP (NP (DT the) (JJS biggest) (NN object)) (PP (IN in) (NP (PRP$ our) (JJ solar) (NN system))))) (. .)))
The Sun is the biggest object in our solar system.
(ROOT (S (NP (NP (RB Only) (DT the) (NN sun)) (PP (IN in) (NP (PRP$ our) (JJ solar) (NN system)))) (VP (VBP give) (PRT (RP off)) (NP (PRP$ their) (JJ own) (NN light))) (. .)))
Only the sun in our solar system give off their own light.