( ( In ( an ( animated sequence ) ) ) ( we ( ( learn ( that ( ( ( the weight ) ( of ( an object ) ) ) ( is ( ( an expression ) ( of ( ( the force ) ( of ( gravity ( ( pulling it ) ( toward ( ( ( a planet ) or ) ( other ( celestial body ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (DT an) (JJ animated) (NN sequence))) (NP (PRP we)) (VP (VBP learn) (SBAR (IN that) (S (NP (NP (DT the) (NN weight)) (PP (IN of) (NP (DT an) (NN object)))) (VP (VBZ is) (NP (NP (DT an) (NN expression)) (PP (IN of) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN gravity)) (VP (VBG pulling) (NP (PRP it)) (PP (IN toward) (NP (NP (DT a) (NN planet)) (CC or) (NP (JJ other) (JJ celestial) (NN body)))))))))))))) (. .)))
In an animated sequence we learn that the weight of an object is an expression of the force of gravity pulling it toward a planet or other celestial body.
(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)))))))))) (. .)))