( ( ( ( ( ( Because ( of ( ( ( ( ( this coincidence ) , ) ( the sun ) ) and ) ( the moon ) ) ) ) ( both ( appear ( to ( be ( about ( ( the ( same ( angular size ) ) ) ( in ( our skies ) ) ) ) ) ) ) ) ) , ) and ) ( ( the moon ) ( ( is just ) ( the ( right ( size ( to ( cover ( ( the disk ) ( of ( the sun ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN Because) (PP (IN of) (NP (NP (DT this) (NN coincidence)) (, ,) (NP (DT the) (NN sun)) (CC and) (NP (DT the) (NN moon))))) (NP (DT both)) (VP (VBP appear) (S (VP (TO to) (VP (VB be) (PP (IN about) (NP (NP (DT the) (JJ same) (NN angular) (NN size)) (PP (IN in) (NP (PRP$ our) (NNS skies)))))))))) (, ,) (CC and) (S (NP (DT the) (NN moon)) (VP (VBZ is) (ADVP (RB just)) (NP (DT the) (JJ right) (NN size) (S (VP (TO to) (VP (VB cover) (NP (NP (DT the) (NN disk)) (PP (IN of) (NP (DT the) (NN sun)))))))))) (. .)))
Because of this coincidence, the sun and the moon both appear to be about the same angular size in our skies, and the moon is just the right size to cover the disk of the sun.
(ROOT (S (NP (NP (DT The) (NN sun)) (CC and) (NP (DT the) (NN moon))) (VP (VBP appear) (S (VP (TO to) (VP (VB be) (PP (IN about) (NP (NP (DT the) (JJ same) (NN size)) (PP (IN in) (NP (DT the) (NN sky))))) (SBAR (IN because) (S (NP (DT the) (NN moon)) (VP (VP (VBZ is) (ADJP (JJR smaller)) (PP (IN in) (NP (NN diameter)))) (CC and) (VP (VBZ is) (ADJP (ADJP (JJR closer)) (PP (TO to) (NP (NN earth)))) (PP (IN than) (NP (DT the) (NN sun))))))))))) (. .)))