(S (S (BASENP (NNP Mr.) (NNP Knutsen)) (VP (VBZ has) (VP (VP (VP (VBN performed) (PP (IN for) (BASENP (JJ many) (NNS years)))) (PP (IN throughout) (BASENP (NNP Texas)))) (PP (IN as) (BASENP (DT a) (JJ professional) (NN clown)))))) (PERIOD .))