(S (S (BASENP (DT The) (JJ current) (NN tool)) (VP (VBZ is) (VP (VP (VBN maintained) (PP (IN by) (NP (BASENP (NNP Martin) (NNP Wattenberg)) (CC and) (BASENP (NNP Jonathan) (NNP Feinberg))))) (PP (IN at) (BASENP (NNP IBM)))))) (PERIOD .))