( Thus ( ( ( the ( SI unit ) ) ( of ( ( the ( quantity weight ) ) ( defined ( in ( this way ) ) ) ) ) ) ( ( is ( ( the newton ) ( -LRB- ( N -RRB- ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Thus)) (NP (NP (DT the) (NNP SI) (NN unit)) (PP (IN of) (NP (NP (DT the) (NN quantity) (NN weight)) (VP (VBN defined) (PP (IN in) (NP (DT this) (NN way))))))) (VP (VBZ is) (NP (NP (DT the) (NN newton)) (PRN (-LRB- -LRB-) (NP (NNP N)) (-RRB- -RRB-)))) (. .)))
Thus the SI unit of the quantity weight defined in this way is the newton (N).
(ROOT (S (NP (NP (NNP Newton)) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT the) (NN si) (NN unit)) (PP (IN for) (NP (NN weight))))) (. .)))
Newton (n) is the si unit for weight.