( ( Which ( of ( the following ) ) ) ( ( best ( describes ( ( the ( apparent motion ) ) ( of ( ( the ( Moon as ) ) ( seen ( by ( ( an observer ) ( on Earth ) ) ) ) ) ) ) ) ) ? ) )
(ROOT (SBARQ (WHNP (WHNP (WDT Which)) (PP (IN of) (NP (DT the) (NN following)))) (SQ (VP (ADVP (RBS best)) (VBZ describes) (NP (NP (DT the) (JJ apparent) (NN motion)) (PP (IN of) (NP (NP (DT the) (NNP Moon) (RB as)) (VP (VBN seen) (PP (IN by) (NP (NP (DT an) (NN observer)) (PP (IN on) (NP (NNP Earth))))))))))) (. ?)))
Which of the following best describes the apparent motion of the Moon as seen by an observer on Earth?
(ROOT (S (NP (CD One) (NN way) (SBAR (IN that) (S (NP (DT the) (NN moon)) (VP (VBZ is) (ADJP (JJ different) (PP (IN from) (NP (NN earth)))))))) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (NN moon)) (VP (VBZ has) (NP (RB almost) (DT no) (NN atmosphere)))))) (. .)))