( ( ( The ( SI Unit ) ) ( to ( measured work ) ) ) ( ( is ( ( ( ( Joule or ) J ) , ) ( expressed ( in Newton-meters ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP SI) (NNP Unit)) (PP (TO to) (NP (JJ measured) (NN work)))) (VP (VBZ is) (NP (NP (NNP Joule) (CC or) (NNP J)) (, ,) (VP (VBN expressed) (PP (IN in) (NP (NNP Newton-meters)))))) (. .)))
The SI Unit to measured work is Joule or J, expressed in Newton-meters.
(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.