( ( Another plan ) ( ( was ( to ( use ( ( ( Mediterranean water ) , ) ( which ( required ( ( a process ) ( of desalination ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Another) (NN plan)) (VP (VBD was) (S (VP (TO to) (VP (VB use) (NP (NP (NNP Mediterranean) (NN water)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD required) (NP (NP (DT a) (NN process)) (PP (IN of) (NP (NN desalination)))))))))))) (. .)))
Another plan was to use Mediterranean water, which required a process of desalination.
(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))))) (. .)))