( Why ( ( ( the Moon ) ( appears ( to ( ( be ( ( the ( same size ) ) ( as ( ( the Sun ) ( to us ) ) ) ) ) ( here ( on Earth ) ) ) ) ) ) ? ) )
(ROOT (SBARQ (WHADVP (WRB Why)) (S (NP (DT the) (NNP Moon)) (VP (VBZ appears) (S (VP (TO to) (VP (VB be) (NP (NP (DT the) (JJ same) (NN size)) (PP (IN as) (NP (NP (DT the) (NNP Sun)) (PP (TO to) (NP (PRP us)))))) (PP (ADVP (RB here)) (IN on) (NP (NNP Earth)))))))) (. ?)))
Why the Moon appears to be the same size as the Sun to us here on Earth?
(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))))))))))) (. .)))