( ( ( The phases ) ( within ( the methodology ) ) ) ( ( remain ( a constant ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS phases)) (PP (IN within) (NP (DT the) (NN methodology)))) (VP (VBP remain) (NP (DT a) (JJ constant))) (. .)))
The phases within the methodology remain a constant .
(ROOT (S (PP (IN During) (NP (NN phase) (NN change))) (, ,) (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (DT a) (NN system)))) (VP (VBZ remains) (ADJP (JJ constant))) (. .)))