seem sure of where it should go 
(ROOT (S (VP (VB seem) (ADJP (JJ sure) (PP (IN of) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (MD should) (VP (VB go))))))))))
(ROOT (S (VP (VB ) (ADJP (JJ ) (PP (IN ) (SBAR (WHADVP (WRB )) (S (NP (PRP )) (VP (MD ) (VP (VB ))))))))))