go to the u.n. and ask permission for a preemptive strike 
(ROOT (S (VP (VP (VB go) (PP (IN to) (NP (DT the) (NNP u.n.)))) (CC and) (VP (VB ask) (NP (NP (NN permission)) (PP (IN for) (NP (DT a) (JJ preemptive) (NN strike))))))))
(ROOT (S (VP (VP (VB ) (PP (IN ) (NP (DT ) (NNP )))) (CC ) (VP (VB ) (NP (NP (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))))