( ( As ( with ( ( other systems ) ( of units ) ) ) ) ( , ( ( ( the ( base units ) ) ( of ( ( a set ) ( of ( natural units ) ) ) ) ) ( ( will ( ( ( include ( ( definitions and ) values ) ) ( for ( ( ( ( ( ( ( ( ( length , ) mass ) , ) time ) , ) temperature ) , ) and ) ( electric charge ) ) ) ) ( -LRB- ( ( in ( lieu ( of ( electric current ) ) ) ) -RRB- ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN As) (PP (IN with) (NP (NP (JJ other) (NNS systems)) (PP (IN of) (NP (NNS units)))))) (, ,) (NP (NP (DT the) (NN base) (NNS units)) (PP (IN of) (NP (NP (DT a) (NN set)) (PP (IN of) (NP (JJ natural) (NNS units)))))) (VP (MD will) (VP (VB include) (NP (NNS definitions) (CC and) (NNS values)) (PP (IN for) (NP (NP (NN length)) (, ,) (NP (NN mass)) (, ,) (NP (NN time)) (, ,) (NP (NN temperature)) (, ,) (CC and) (NP (JJ electric) (NN charge)))) (PRN (-LRB- -LRB-) (PP (IN in) (NP (NP (NN lieu)) (PP (IN of) (NP (JJ electric) (NN current))))) (-RRB- -RRB-)))) (. .)))
As with other systems of units, the base units of a set of natural units will include definitions and values for length, mass, time, temperature, and electric charge (in lieu of electric current).
(ROOT (S (NP (NP (NNP Time)) (, ,) (NP (NN mass)) (, ,) (NP (NN length)) (, ,) (CC and) (NP (NN temperature))) (VP (VBP are) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (NP (NN base) (NNS units))))))) (. .)))