(S (S (NP (BASENP (NNP Umaru) (NNP Yar) (POS `) (NNP Adua)) (PRN (COMMA ,) (NP (BASENP (DT the) (NNP President)) (PP (IN of) (BASENP (NNP Nigeria)))) (COMMA ,))) (VP (VBZ has) (VP (VBN stated) (SBAR (IN that) (S (BASENP (PRP he)) (VP (VBZ is) (ADJP (QT (DQL ``) (ADJP (RB very) (JJ sad)) (DQR '')) (PP (IN about) (BASENP (DT the) (JJ ongoing) (NN violence)))))))))) (PERIOD .))