( ( The sun ) ( ( is ( ( only ( one ( solar system ) ) ) ( out ( of ( millions ( of ( solar systems ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (NP (NP (RB only) (CD one) (JJ solar) (NN system)) (PP (RB out) (IN of) (NP (NP (NNS millions)) (PP (IN of) (NP (JJ solar) (NNS systems))))))) (. .)))
The sun is only one solar system out of millions of solar systems.
(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.