( ( From ( ( the results ) ( of ( studies ( on ( ( the origins ) ( of ( ( the ( various kinds ) ) ( of ( rocks ( -LRB- ( petrology -RRB- ) ) ) ) ) ) ) ) ) ) ) ) ( , ( ( ( coupled ( with ( ( ( studies ( of ( ( rock layering ) ( -LRB- ( stratigraphy -RRB- ) ) ) ) ) and ) ( ( the evolution ) ( of life ) ) ) ) ) ( -LRB- ( paleontology -RRB- ) ) ) ( , ( today ( ( geologists ( reconstruct ( ( the sequence ) ( of ( events ( that ( has ( shaped ( ( the ( Earth 's ) ) surface ) ) ) ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (PP (IN From) (NP (NP (DT the) (NNS results)) (PP (IN of) (NP (NP (NNS studies)) (PP (IN on) (NP (NP (DT the) (NNS origins)) (PP (IN of) (NP (NP (DT the) (JJ various) (NNS kinds)) (PP (IN of) (NP (NP (NNS rocks)) (PRN (-LRB- -LRB-) (NP (NN petrology)) (-RRB- -RRB-)))))))))))) (, ,) (S (VP (VBN coupled) (PP (IN with) (NP (NP (NP (NNS studies)) (PP (IN of) (NP (NP (NN rock) (NN layering)) (PRN (-LRB- -LRB-) (NP (NN stratigraphy)) (-RRB- -RRB-))))) (CC and) (NP (NP (DT the) (NN evolution)) (PP (IN of) (NP (NN life)))))) (PRN (-LRB- -LRB-) (ADVP (RB paleontology)) (-RRB- -RRB-)))) (, ,) (NP (NN today)) (VP (VBZ geologists) (VP (VB reconstruct) (NP (NP (DT the) (NN sequence)) (PP (IN of) (NP (NP (NNS events)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (VP (VBN shaped) (NP (NP (DT the) (NN Earth) (POS 's)) (NN surface))))))))))) (. .)))
From the results of studies on the origins of the various kinds of rocks (petrology), coupled with studies of rock layering (stratigraphy) and the evolution of life (paleontology), today geologists reconstruct the sequence of events that has shaped the Earth's surface.
(ROOT (S (NP (PRP We)) (VP (VBP call) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NN rock) (NNS layers)))) (ADVP (RB stratigraphy))) (. .)))