just when you think you are making sense of it , something happens that tells you there is no sense . 
(ROOT (S (SBAR (ADVP (RB just)) (WHADVP (WRB when)) (S (NP (PRP you)) (VP (VBP think) (SBAR (S (NP (PRP you)) (VP (VBP are) (VP (VBG making) (NP (NN sense)) (PP (IN of) (NP (PRP it)))))))))) (, ,) (NP (NP (NN something))) (VP (VBZ happens) (SBAR (WHNP (WDT that)) (S (VP (VBZ tells) (NP (PRP you)) (SBAR (S (NP (EX there)) (VP (VBZ is) (NP (DT no) (NN sense))))))))) (. .)))
(ROOT (S (SBAR (ADVP (RB )) (WHADVP (WRB )) (S (NP (PRP )) (VP (VBP ) (SBAR (S (NP (PRP )) (VP (VBP ) (VP (VBG ) (NP (NN )) (PP (IN ) (NP (PRP )))))))))) (, ) (NP (NP (NN ))) (VP (VBZ ) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (PRP )) (SBAR (S (NP (EX )) (VP (VBZ ) (NP (DT ) (NN ))))))))) (. )))