(S (S (BASENP (JJ Current) (NNP president) (NNP Jacob) (NNP Zuma)) (VP (VP (VP (VBD visited) (BASENP (NNP Mandela))) (PP (IN in) (BASENP (NN hospital)))) (BASENP (DT this) (JJ past) (NN weekend)))) (PERIOD .))