have been called ` under siege 3 
(ROOT (S (VP (VBP have) (VP (VBN been) (VP (VBN called) (S (`` `) (PP (IN under) (NP (NN siege))))))) (CD 3)))
(ROOT (S (VP (VBP ) (VP (VBN ) (VP (VBN ) (S (`` ) (PP (IN ) (NP (NN ))))))) (CD )))