( ( Amedeo Avagadro ) ( ( ( ( ( proposed , ) ( on ( the ( other hand ) ) ) ) , ) ( that ( ( ( equal volumes ) ( of ( ( ( -LRB- ( gaseous -RRB- ) ) molecules ) ( at ( the ( same ( ( temperature and ) pressure ) ) ) ) ) ) ) ( contain ( ( equal numbers ) ( of molecules ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Amedeo) (NNP Avagadro)) (VP (VBD proposed) (, ,) (PP (IN on) (NP (DT the) (JJ other) (NN hand))) (, ,) (SBAR (IN that) (S (NP (NP (JJ equal) (NNS volumes)) (PP (IN of) (NP (NP (PRN (-LRB- -LRB-) (NP (NNS gaseous)) (-RRB- -RRB-)) (NNS molecules)) (PP (IN at) (NP (DT the) (JJ same) (NN temperature) (CC and) (NN pressure)))))) (VP (VBP contain) (NP (NP (JJ equal) (NNS numbers)) (PP (IN of) (NP (NNS molecules)))))))) (. .)))
Amedeo Avagadro proposed, on the other hand, that equal volumes of (gaseous) molecules at the same temperature and pressure contain equal numbers of molecules.
(ROOT (S (S (VP (VBG Reducing) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN in) (NP (DT a) (JJ rigid) (NN container)))))))) (VP (VBZ causes) (NP (NN pressure)) (S (VP (TO to) (VP (VB decrease))))) (. .)))