(S (S (BASENP (DT The) (NN discovery)) (VP (MD may) (VP (VB help) (PP (IN in) (S (VP (VBG understanding) (NP (BASENP (NNS plaques)) (VP (VBN associated) (PP (IN with) (NP (BASENP (NNP Alzheimer) (POS 's)) (NN disease))))))))))) (PERIOD .))