( ( ( ( ( Our sun ) , ) ( the ( nearest star ) ) ) , ) ( ( ( is ( quite bright ) ) ( because ( it ( is ( so ( close ( to us ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (PRP$ Our) (NN sun)) (, ,) (NP (DT the) (JJS nearest) (NN star)) (, ,)) (VP (VBZ is) (ADJP (RB quite) (JJ bright)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (ADJP (RB so) (JJ close) (PP (TO to) (NP (PRP us)))))))) (. .)))
Our sun, the nearest star, is quite bright because it is so close to us.
(ROOT (S (PP (IN From) (NP (NN earth))) (, ,) (NP (DT the) (NN sun)) (VP (VBZ appears) (NP (NN brighter)) (PP (IN than) (NP (DT any) (JJ other) (NN star))) (SBAR (IN because) (S (NP (DT the) (NN sun)) (VP (VBZ is) (NP (DT the) (JJS closest) (NN star))))))))