( ( ( The length ) ( of ( time ( needed ( for ( these divisions ) ) ) ) ) ) ( ( is ( based ( on ( water temperature ) ) ) ) ; ) )
(ROOT (S (NP (NP (DT The) (NN length)) (PP (IN of) (NP (NP (NN time)) (VP (VBN needed) (PP (IN for) (NP (DT these) (NNS divisions))))))) (VP (VBZ is) (VP (VBN based) (PP (IN on) (NP (NN water) (NN temperature))))) (: ;)))
The length of time needed for these divisions is based on water 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))))))) (. .)))