( ( ( ( Amelioration ( from ( ( motion and ) walking ) ) ) , ) ( from ( change ( of position ) ) ) ) . )
(ROOT (S (VP (VBN Amelioration) (PP (IN from) (NP (NN motion) (CC and) (NN walking))) (, ,) (PP (IN from) (NP (NP (NN change)) (PP (IN of) (NP (NN position)))))) (. .)))
Amelioration from motion and walking, from change of 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))))))) (. .)))