(S (S (PP (IN As) (NP (BASENP (NN part)) (PP (IN of) (BASENP (DT the) (NN truce) (NN agreement))))) (COMMA ,) (S (BASENP (PRP they)) (VP (MD must) (VP (VP (VB cross) (BASENP (DT the) (NN river))) (CC and) (VP (VP (VB exercise) (BASENP (NN control))) (PP (IN over) (SBAR (WHNP (WP what)) (S (VP (VBZ has) (VP (VBN been) (NP (BASENP (ADJP (NNP Hezbollah) (VBN controlled)) (NN territory)) (PP (IN in) (BASENP (JJ southern) (NNP Lebanon)))))))))))))) (PERIOD .))