Predicate 怎么回事



Frameset: f1

   ARG0: entity described

Frame:

 (NP-SBJ (-NONE- *pro*))
(VP (ADVP (AD 到底))
    (VP (VV 怎么回事))) 

ARG0: *pro*
ARGM-ADV: 到底
REL:  怎么回事