( Davy ( also ( ( invented ( ( ( ( a ( miner 's ) ) ( safety helmet ) ) and ) ( a ( process ( to ( desalinate ( sea water ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Davy)) (ADVP (RB also)) (VP (VBD invented) (NP (NP (NP (DT a) (NN miner) (POS 's)) (NN safety) (NN helmet)) (CC and) (NP (DT a) (NN process) (S (VP (TO to) (VP (VB desalinate) (NP (NN sea) (NN water)))))))) (. .)))
Davy also invented a miner's safety helmet and a process to desalinate sea 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))))) (. .)))