the part where nothing 's happening , or the part where something 's happening 
(ROOT (NP (NP (NP (DT the) (NN part)) (SBAR (WHADVP (WRB where)) (S (NP (NN nothing)) (VP (VBZ 's) (VP (VBG happening)))))) (, ,) (CC or) (NP (NP (DT the) (NN part)) (SBAR (WHADVP (WRB where)) (S (NP (NN something)) (VP (VBZ 's) (VP (VBG happening))))))))
(ROOT (NP (NP (NP (DT ) (NN )) (SBAR (WHADVP (WRB )) (S (NP (NN )) (VP (VBZ ) (VP (VBG )))))) (, ) (CC ) (NP (NP (DT ) (NN )) (SBAR (WHADVP (WRB )) (S (NP (NN )) (VP (VBZ ) (VP (VBG ))))))))