( ( This orbit ) ( ( ( takes ( ( ( 10 to ) 12 ) ( earth years ) ) ) ( to complete ) ) . ) )
(ROOT (S (NP (DT This) (NN orbit)) (VP (VBZ takes) (NP (QP (CD 10) (TO to) (CD 12)) (NN earth) (NNS years)) (S (VP (TO to) (VP (VB complete))))) (. .)))
This orbit takes 10 to 12 earth years to complete.
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (PP (IN about) (NP (NP (CD one) (NN year)) (PP (IN for) (NP (NN earth))))) (S (VP (TO to) (VP (VB orbit) (NP (DT the) (NN sun)))))) (. .)))
It takes about one year for earth to orbit the sun.