( ( ( ( ( ( For example ) ( , ( ( the Earth ) ( ( completes ( ( one rotation ) ( about ( its axis ) ) ) ) ( about ( every ( 24 hours ) ) ) ) ) ) ) , ) but ) ( it ( completes ( ( one revolution ) ( around ( ( the Sun ) ( ( about ( every 365 ) ) days ) ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN For) (NP (NN example))) (, ,) (NP (DT the) (NN Earth)) (VP (VBZ completes) (NP (NP (CD one) (NN rotation)) (PP (IN about) (NP (PRP$ its) (NNS axis)))) (PP (IN about) (NP (DT every) (CD 24) (NNS hours))))) (, ,) (CC but) (S (NP (PRP it)) (VP (VBZ completes) (NP (NP (CD one) (NN revolution)) (PP (IN around) (NP (NP (DT the) (NNP Sun)) (NP (QP (RB about) (DT every) (CD 365)) (NNS days))))))) (. .)))
For example, the Earth completes one rotation about its axis about every 24 hours, but it completes one revolution around the Sun about every 365 days.
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (NP (NP (CD 24) (NNS hours)) (PP (IN for) (NP (DT the) (NN earth) (S (VP (TO to) (VP (VB make) (NP (NP (DT a) (JJ complete) (NN rotation)) (PP (IN of) (NP (PRP$ its) (NNS axis))))))))))) (. .)))