( ( ( The ( SI unit ) ) ( of weight ) ) ( ( is ( ( the Newton ) ( -LRB- ( N -RRB- ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP SI) (NN unit)) (PP (IN of) (NP (NN weight)))) (VP (VBZ is) (NP (NP (DT the) (NNP Newton)) (PRN (-LRB- -LRB-) (NP (NNP N)) (-RRB- -RRB-)))) (. .)))
The SI unit of weight 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.