(S (S (ADVP (RB However)) (COMMA ,) (S (BASENP (NNP CERN) (NNS officials)) (VP (ADVP (RB now)) (VP (VBP believe) (SBAR (IN that) (S (BASENP (PRP it)) (VP (MD may) (VP (VB take) (UCP (PP (IN until) (NP (BASENP (DT the) (NN end)) (PP (IN of) (BASENP (NNP July))))) (CC or) (ADVP (RBR longer))))))))))) (PERIOD .))