( ( The Moon ) ( ( ( takes ( as ( much time ) ) ) ( to ( ( ( rotate once ) ( on ( its axis ) ) ) ( as ( it ( takes ( to ( complete ( ( one orbit ) ( of Earth ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Moon)) (VP (VBZ takes) (PP (IN as) (NP (JJ much) (NN time))) (S (VP (TO to) (VP (VB rotate) (ADVP (RB once)) (PP (IN on) (NP (PRP$ its) (NNS axis))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ takes) (S (VP (TO to) (VP (VB complete) (NP (NP (CD one) (NN orbit)) (PP (IN of) (NP (NNP Earth)))))))))))))) (. .)))
The Moon takes as much time to rotate once on its axis as it takes to complete one orbit of Earth.
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (NP (NN earth) (CD one) (NN week)) (S (VP (TO to) (VP (VB rotate) (PP (IN on) (NP (PRP$ its) (NNS axis))) (NP (CD seven) (NNS times)))))) (. .)))