(S (S (ADVP (BASENP (NN Forty) (NNS years)) (RBR later)) (S (BASENP (PRP it)) (VP (VP (VBD was) (BASENP (NNP Peres))) (SBAR (WHNP (WP who)) (S (VP (ADVP (RB secretly)) (VP (VBD gave) (NP (BASENP (DT the) (JJ green) (NN light)) (PP (IN for) (NP (BASENP (NN dialogue)) (PP (IN with) (NP (BASENP (NNP Yassir) (NNP Arafat)) (COMMA ,) (PP (IN of) (BASENP (DT the) (JJ verboten) (NNP Palestine) (NNP Liberation) (NNP Organization))))))))))))))) (PERIOD .))