( ( In conclusion ) ( Motion ( ( is ( change ( in position ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (NN conclusion))) (NP (NNP Motion)) (VP (VBZ is) (NP (NP (NN change)) (PP (IN in) (NP (NN position))))) (. .)))
In conclusion Motion is change in position.
(ROOT (S (PP (IN In) (NP (NN science))) (, ,) (NP (NN motion)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NN position))))))) (. .)))