( ( The Sun ) ( ( is ( by ( ( far ( the ( most ( massive object ) ) ) ) ( in ( the ( solar system ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sun)) (VP (VBZ is) (PP (IN by) (NP (NP (RB far) (DT the) (JJS most) (JJ massive) (NN object)) (PP (IN in) (NP (DT the) (JJ solar) (NN system)))))) (. .)))
The Sun is by far the most massive object in the 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.