while we no longer possess the lack-of-attention span that we did at seventeen , we had no trouble sitting for blade ii . 
(ROOT (S (SBAR (IN while) (S (NP (PRP we)) (ADVP (RB no) (RBR longer)) (VP (VBP possess) (NP (NP (DT the) (NML (NML (NN lack)) (HYPH -) (PP (IN of) (HYPH -) (NP (NN attention)))) (NN span)) (SBAR (WHNP (WDT that)) (S (NP (PRP we)) (VP (VBD did) (PP (IN at) (NP (CD seventeen)))))))))) (, ,) (NP (PRP we)) (VP (VBD had) (NP (NP (DT no) (NN trouble)) (S (VP (VBG sitting) (PP (IN for) (NP (NN blade) (CD ii))))))) (. .)))
(ROOT (S (SBAR (IN ) (S (NP (PRP )) (ADVP (RB ) (RBR )) (VP (VBP ) (NP (NP (DT ) (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (NN )))) (NN )) (SBAR (WHNP (WDT )) (S (NP (PRP )) (VP (VBD ) (PP (IN ) (NP (CD )))))))))) (, ) (NP (PRP )) (VP (VBD ) (NP (NP (DT ) (NN )) (S (VP (VBG ) (PP (IN ) (NP (NN ) (CD ))))))) (. )))