what can be gleaned from this three-hour endurance test built around an hour 's worth of actual material 
(ROOT (SBAR (WHNP (WP what)) (S (VP (MD can) (VP (VB be) (VP (VBN gleaned) (PP (IN from) (NP (NP (DT this) (NML (CD three) (HYPH -) (NN hour)) (NN endurance) (NN test)) (VP (VBN built) (PP (IN around) (NP (NP (NP (DT an) (NN hour) (POS 's)) (NN worth)) (PP (IN of) (NP (JJ actual) (NN material))))))))))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (MD ) (VP (VB ) (VP (VBN ) (PP (IN ) (NP (NP (DT ) (NML (CD ) (HYPH ) (NN )) (NN ) (NN )) (VP (VBN ) (PP (IN ) (NP (NP (NP (DT ) (NN ) (POS )) (NN )) (PP (IN ) (NP (JJ ) (NN ))))))))))))))