of boredom to the point of collapse , turning into a black hole of dullness , from which no interesting concept can escape 
(ROOT (S (PP (IN of) (NP (NN boredom))) (PP (IN to) (NP (NP (DT the) (NN point)) (PP (IN of) (NP (NN collapse))))) (, ,) (S (VP (VBG turning) (PP (IN into) (NP (NP (NP (DT a) (JJ black) (NN hole)) (PP (IN of) (NP (NN dullness)))) (, ,) (SBAR (WHPP (IN from) (WHNP (WDT which))) (S (NP (DT no) (JJ interesting) (NN concept)) (VP (MD can) (VP (VB escape)))))))))))
(ROOT (S (PP (IN ) (NP (NN ))) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))))) (, ) (S (VP (VBG ) (PP (IN ) (NP (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN )))) (, ) (SBAR (WHPP (IN ) (WHNP (WDT ))) (S (NP (DT ) (JJ ) (NN )) (VP (MD ) (VP (VB )))))))))))