( He ( ( suggested ( ( ( that ( ( all matter ) ( was ( ( made up ) ( of ( one substance ) ) ) ) ) ) and ) ( that ( ( ( the ( four elements ) ) ( -LRB- ( ( ( air , ) ( earth ( , ( fire ( , water ) ) ) ) ) -RRB- ) ) ) ( ( are just ) ( ( different forms ) ( of ( that substance ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD suggested) (SBAR (SBAR (IN that) (S (NP (DT all) (NN matter)) (VP (VBD was) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (CD one) (NN substance))))))) (CC and) (SBAR (IN that) (S (NP (NP (DT the) (CD four) (NNS elements)) (PRN (-LRB- -LRB-) (NP (NN air)) (, ,) (NP (NN earth) (, ,) (NN fire) (, ,) (NN water)) (-RRB- -RRB-))) (VP (VBP are) (ADVP (RB just)) (NP (NP (JJ different) (NNS forms)) (PP (IN of) (NP (DT that) (NN substance))))))))) (. .)))
He suggested that all matter was made up of one substance and that the four elements (air, earth, fire, water) are just different forms of that substance.
(ROOT (S (NP (NNS Elements)) (VP (VBP are) (NP (NP (JJ pure) (NNS substances)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (ADVP (RB up) (DT all) (NN matter))))))) (. .)))