(S (S (NP (BASENP (DT The) (NN dam)) (PP (IN on) (BASENP (DT the) (NNP Cotter) (NNP River)))) (VP (VBZ has) (VP (VP (VBN been) (PP (IN under) (BASENP (NN construction)))) (PP (IN for) (BASENP (NN four) (NNS years)))))) (PERIOD .))