( ( ( These changes ) ( in ( ( ( ( ( volume , ) pressure ) , ) and ) temperature ) ) ) ( ( are ( representative ( of ( ( the ( changing conditions ) ) ( in ( ( the cylinder ) ( of ( a ( diesel engine ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT These) (NNS changes)) (PP (IN in) (NP (NP (NN volume)) (, ,) (NP (NN pressure)) (, ,) (CC and) (NP (NN temperature))))) (VP (VBP are) (NP (NP (NN representative)) (PP (IN of) (NP (NP (DT the) (VBG changing) (NNS conditions)) (PP (IN in) (NP (NP (DT the) (NN cylinder)) (PP (IN of) (NP (DT a) (JJ diesel) (NN engine))))))))) (. .)))
These changes in volume, pressure, and temperature are representative of the changing conditions in the cylinder of a diesel engine.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NN volume)) (VP (VBZ does) (RB not) (VP (VB change))))) (, ,) (NP (NN temperature)) (VP (VBZ is) (ADJP (JJ proportional) (S (VP (TO to) (VP (VB pressure)))))) (. .)))