( ( ( ( His ( atomic theory ) ) ( -LRB- ( 1803 -RRB- ) ) ) ( with ( ( its ( pioneering work ) ) ( on ( ( the constitution ) ( of elements ) ) ) ) ) ) ( ( ( was ( ( the precursor ) ( of ( all ( modern chemistry ) ) ) ) ) ( whilst ( ( ( his lectures ) ( on meteorology ) ) ( ( turned ( ( the study ) ( of ( the weather ) ) ) ) ( into ( a science ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (PRP$ His) (JJ atomic) (NN theory)) (PRN (-LRB- -LRB-) (NP (CD 1803)) (-RRB- -RRB-))) (PP (IN with) (NP (NP (PRP$ its) (JJ pioneering) (NN work)) (PP (IN on) (NP (NP (DT the) (NN constitution)) (PP (IN of) (NP (NNS elements)))))))) (VP (VBD was) (NP (NP (DT the) (NN precursor)) (PP (IN of) (NP (DT all) (JJ modern) (NN chemistry))))) (SBAR (IN whilst) (S (NP (NP (PRP$ his) (NN lectures)) (PP (IN on) (NP (NN meteorology)))) (VP (VBD turned) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (DT the) (NN weather)))) (PP (IN into) (NP (DT a) (NN science)))))) (. .)))
His atomic theory (1803) with its pioneering work on the constitution of elements was the precursor of all modern chemistry whilst his lectures on meteorology turned the study of the weather into a science.
(ROOT (S (NP (NNP Chemistry)) (VP (VBZ is) (VP (VBN based) (PP (IN on) (NP (NP (DT the) (JJ modern) (JJ atomic) (NN theory)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ states) (SBAR (IN that) (S (NP (DT all) (NN matter)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NNS atoms)))))))))))))) (. .)))