( It ( ( ( takes ( Earth ( a year ) ) ) ( to ( orbit ( the sun ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (NP (NP (NNP Earth)) (NP (DT a) (NN year))) (S (VP (TO to) (VP (VB orbit) (NP (DT the) (NN sun)))))) (. .)))
It takes Earth a year to orbit the sun.
(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.