( ( In science ) ( changes ( ( might ( occur ( in ( ( ( ( ( properties ( of materials ) ) , ) ( positions ( of ( ( ( objects , ) motion ) , ) ) ) ) and ) ( ( ( form and ) function ) ( of systems ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (NN science))) (NP (NNS changes)) (VP (MD might) (VP (VB occur) (PP (IN in) (NP (NP (NP (NNS properties)) (PP (IN of) (NP (NNS materials)))) (, ,) (NP (NP (NNS positions)) (PP (IN of) (NP (NP (NNS objects)) (, ,) (NP (NN motion)) (, ,)))) (CC and) (NP (NP (NN form) (CC and) (NN function)) (PP (IN of) (NP (NNS systems)))))))) (. .)))
In science changes might occur in properties of materials, positions of objects, motion, and form and function of systems.
(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))))))) (. .)))