( ( ( the ( Normal ( force ( and ( the weight ) ) ) ) ) ( of ( the block ) ) ) . )
(ROOT (NP (NP (DT the) (NNP Normal) (NN force) (CC and) (DT the) (NN weight)) (PP (IN of) (NP (DT the) (NN block))) (. .)))
the Normal force and the weight of the block.
(ROOT (S (NP (NNP Weight)) (VP (VBZ is) (NP (NP (DT the) (NN result)) (PP (IN of) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN gravity)) (VP (VBG being) (VP (VBN opposed) (PP (IN by) (NP (DT the) (JJ normal) (NN force))))))))))) (. .)))