( ( ( ( An increase ) ( in volume ) ) ( resulting ( from ( a ( decreased temperature ) ) ) ) ) . )
(ROOT (NP (NP (NP (DT An) (NN increase)) (PP (IN in) (NP (NN volume)))) (VP (VBG resulting) (PP (IN from) (NP (DT a) (VBN decreased) (NN temperature)))) (. .)))
An increase in volume resulting from a  decreased temperature.
(ROOT (S (PP (IN As) (NP (NN temperature) (NNS increases))) (, ,) (NP (NN volume)) (VP (VBZ increases)) (. .)))