(S (S (S (BASENP (NNPS Mauritanians)) (VP (VP (VP (VBD voted) (PP (IN in) (NP (BASENP (NN favor)) (PP (IN of) (BASENP (DT a) (JJ new) (NN Constitution)))))) (PP (IN by) (BASENP (DT an) (JJ overwhelming) (NN majority)))) (PP (IN in) (NP (BASENP (DT a) (NN referendum)) (VP (VBN held) (PP (IN on) (BASENP (NNP June) (NN 26)))))))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (NNS results)) (VP (VP (VBN announced) (PP (IN by) (BASENP (NNP Interior) (NNP Ministry) (NNS officials)))) (BASENP (NN today))))))) (PERIOD .))