( ( As ( ( a result ) ( of ( ( this ( new position ) ) ( of gravity ) ) ) ) ) ( ( ( now ( ( extends ( a force ) ) along ) ) ( ( a ( new vertical ) ) ( which ( will ( cause ( the ( rock ( to ( fall ( toward ( ( the foot ) ( of ( the mountain ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (SINV (PP (IN As) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (NP (DT this) (JJ new) (NN position)) (PP (IN of) (NP (NN gravity))))))) (VP (ADVP (RB now)) (VBZ extends) (NP (DT a) (NN force)) (PRT (RP along))) (NP (NP (DT a) (JJ new) (NN vertical)) (SBAR (WHNP (WDT which)) (S (VP (MD will) (VP (VB cause) (NP (DT the) (NN rock) (S (VP (TO to) (VP (VB fall) (PP (IN toward) (NP (NP (DT the) (NN foot)) (PP (IN of) (NP (DT the) (NN mountain)))))))))))))) (. .)))
As a result of this new position of gravity now extends a force along a new vertical which will cause the rock to fall toward the foot of the mountain.
(ROOT (S (NP (NNP Gravity)) (VP (VBZ causes) (S (NP (NNS rocks)) (VP (TO to) (VP (VB roll) (ADVP (RB downhill)))))) (. .)))