have been perfect for an old `` twilight zone '' episode 
(ROOT (VP (VBP have) (VP (VBN been) (ADJP (JJ perfect) (PP (IN for) (NP (DT an) (JJ old) (`` ``) (NML (NN twilight) (NN zone)) ('' '') (NN episode)))))))
(ROOT (VP (VBP ) (VP (VBN ) (ADJP (JJ ) (PP (IN ) (NP (DT ) (JJ ) (`` ) (NML (NN ) (NN )) ('' ) (NN )))))))