( ( The Sun ) ( ( is ( ( the star ) ( at ( ( the center ) ( of ( our ( Solar System ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sun)) (VP (VBZ is) (NP (NP (DT the) (NN star)) (PP (IN at) (NP (NP (DT the) (NN center)) (PP (IN of) (NP (PRP$ our) (NNP Solar) (NNP System))))))) (. .)))
The Sun is the star at the center of our Solar System.
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (VP (VBN considered) (NP (NP (DT the) (NN center)) (PP (IN of) (NP (DT the) (JJ solar) (NN system)))))) (. .)))