to sit through about 90 minutes of a so-called ` comedy ' and not laugh once 
(ROOT (S (VP (TO to) (VP (VP (VB sit) (PP (IN through) (NP (NP (QP (RB about) (CD 90)) (NNS minutes)) (PP (IN of) (NP (DT a) (ADJP (RB so) (HYPH -) (VBN called)) (`` `) (NN comedy) ('' ')))))) (CC and) (RB not) (VP (VB laugh) (ADVP (RB once)))))))
(ROOT (S (VP (TO ) (VP (VP (VB ) (PP (IN ) (NP (NP (QP (RB ) (CD )) (NNS )) (PP (IN ) (NP (DT ) (ADJP (RB ) (HYPH ) (VBN )) (`` ) (NN ) ('' )))))) (CC ) (RB ) (VP (VB ) (ADVP (RB )))))))