( ( The Moon ) ( ( ( takes ( ( about 27.3 ) days ) ) ( to ( rotate ( about ( ( ( its ( own axis ) ) , ) ( which ( is ( ( the ( same time ) ) ( it ( takes ( to ( complete ( ( one orbit ) ( around ( the Earth ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Moon)) (VP (VBZ takes) (NP (QP (RB about) (CD 27.3)) (NNS days)) (S (VP (TO to) (VP (VB rotate) (PP (IN about) (NP (NP (PRP$ its) (JJ own) (NNS axis)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT the) (JJ same) (NN time)) (SBAR (S (NP (PRP it)) (VP (VBZ takes) (S (VP (TO to) (VP (VB complete) (NP (NP (CD one) (NN orbit)) (PP (IN around) (NP (DT the) (NN Earth)))))))))))))))))))) (. .)))
The Moon takes about 27.3 days to rotate about its own axis, which is the same time it takes to complete one orbit around the 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)))))) (. .)))