( Then ( ( ( repeat ( the process ) ) ( with ( clean ( fresh water ) ) ) ) . ) )
(ROOT (S (RB Then) (VP (VB repeat) (NP (DT the) (NN process)) (PP (IN with) (NP (JJ clean) (JJ fresh) (NN water)))) (. .)))
Then repeat the process with clean fresh water.
(ROOT (S (NP (NP (NNP Process)) (PP (IN of) (NP (NN desalinization)))) (VP (VBZ helps) (VP (VB provide) (NP (JJR cleaner) (NN water)) (PP (IN for) (NP (NN agriculture))))) (. .)))