( ( ( chemistry , ) ( ( ( physics , ) and ) ( the ( physical sciences ) ) ) ) ; )
(ROOT (NP (NP (NN chemistry)) (, ,) (NP (NP (NNS physics)) (, ,) (CC and) (NP (DT the) (JJ physical) (NNS sciences))) (: ;)))
chemistry, physics, and the physical sciences;
(ROOT (S (NP (NP (NNP Chemistry)) (CC and) (NP (NNS physics))) (VP (VBP are) (NP (NP (NNS fields)) (PP (IN in) (NP (JJ physical))))) (. .)))