that 's all that 's going on here . 
(ROOT (S (NP (DT that)) (VP (VBZ 's) (NP (NP (DT all)) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBG going) (PRT (RP on)) (ADVP (RB here)))))))) (. .)))
(ROOT (S (NP (DT )) (VP (VBZ ) (NP (NP (DT )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (VP (VBG ) (PRT (RP )) (ADVP (RB )))))))) (. )))