( ( Wind energy ) ( ( can ( be ( ( converted ( to electricity ) ) ( by ( using ( wind turbines ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Wind) (NN energy)) (VP (MD can) (VP (VB be) (VP (VBN converted) (PP (TO to) (NP (NN electricity))) (PP (IN by) (S (VP (VBG using) (NP (NN wind) (NNS turbines)))))))) (. .)))
Wind energy can be converted to electricity by using wind turbines.
(ROOT (S (NP (NP (DT A) (NN turbine)) (VP (VBG using) (NP (NP (NNS tides)) (PP (IN in) (NP (DT the) (NN ocean)))))) (VP (MD can) (VP (VB create) (NP (NN electricity) (NN energy)))) (. .)))