( ( ( All measurement ) ( of density ) ) ( ( are ( traceable ( to ( ( the ( base ( primary standards ) ) ) ( of ( mass ( , ( ( length and ) temperature ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT All) (NN measurement)) (PP (IN of) (NP (NN density)))) (VP (VBP are) (ADJP (JJ traceable) (PP (TO to) (NP (NP (DT the) (JJ base) (JJ primary) (NNS standards)) (PP (IN of) (NP (NN mass) (, ,) (NN length) (CC and) (NN temperature))))))) (. .)))
All measurement of density are traceable to the base primary standards of mass, length and temperature.
(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))))))) (. .)))