where nothing really happens . 
(ROOT (SBAR (WHADVP (WRB where)) (S (NP (NN nothing)) (ADVP (RB really)) (VP (VBZ happens))) (. .)))
(ROOT (SBAR (WHADVP (WRB )) (S (NP (NN )) (ADVP (RB )) (VP (VBZ ))) (. )))