( ( Think ( about it ) ) ( ( Your weight ) ( ( is ( ( a measure ) ( of ( ( the force ) ( of ( ( gravity ( -LRB- ( g-force -RRB- ) ) ) ( ( pulling ( your body ) ) ( towards ( the planet ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (S (VP (VB Think) (PP (IN about) (NP (PRP it))))) (NP (PRP$ Your) (NN weight)) (VP (VBZ is) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NN gravity) (PRN (-LRB- -LRB-) (ADJP (JJ g-force)) (-RRB- -RRB-)) (S (VP (VBG pulling) (NP (PRP$ your) (NN body)) (PP (IN towards) (NP (DT the) (NN planet))))))))))) (. .)))
Think about it Your weight is a measure of the force of gravity (g-force) pulling your body towards the planet.
(ROOT (S (NP (NNP Weight)) (VP (VBZ is) (NP (NP (DT the) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN gravity)) (VP (VBG pulling) (PRT (RP down)) (PP (IN on) (NP (DT an) (NN object)))))))))) (. .)))