( Ions ( ( are ( produced ( either ( ( ( by ( dissolving ( of ( ionic compounds ) ) ) ) or ) ( by ( ionization ( of ( molecular compounds ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Ions)) (VP (VBP are) (VP (VBN produced) (PP (CC either) (PP (IN by) (NP (NP (NNP dissolving)) (PP (IN of) (NP (JJ ionic) (NNS compounds))))) (CC or) (PP (IN by) (NP (NP (NN ionization)) (PP (IN of) (NP (JJ molecular) (NNS compounds)))))))) (. .)))
Ions are produced either by dissolving of ionic compounds or by ionization of molecular compounds.
(ROOT (S (NP (NP (JJ Ionic) (NN compound) (NNS atoms)) (PP (IN of) (NP (JJ various) (NNS elements)))) (VP (VBP gain) (CC or) (VBP lose) (NP (NNS electrons) (S (VP (TO to) (VP (VB produce) (NP (NNS ions))))))) (. .)))