(S (S (NP (BASENP (NNP Rick) (NNP Santorum)) (BASENP (PRP himself))) (VP (VBZ has) (VP (VP (VP (VBN acknowledged) (CC and) (VBN discussed)) (NP (BASENP (DT the) (NN existence) (CC and) (NN prevalence)) (PP (IN of) (BASENP (DT the) (NNP santorum) (NN neologism) (NN phenomenon))))) (COMMA ,) (PP (IN in) (NP (BASENP (NNS comments)) (PP (TO to) (BASENP (DT the) (NN press)))))))) (PERIOD .))