humor to cover up the yawning chasm where the plot should be 
(ROOT (NP (NP (NN humor)) (SBAR (S (VP (TO to) (VP (VB cover) (PRT (RP up)) (NP (NP (DT the) (NN yawning) (NN chasm)) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN plot)) (VP (MD should) (VP (VB be))))))))))))
(ROOT (NP (NP (NN )) (SBAR (S (VP (TO ) (VP (VB ) (PRT (RP )) (NP (NP (DT ) (NN ) (NN )) (SBAR (WHADVP (WRB )) (S (NP (DT ) (NN )) (VP (MD ) (VP (VB ))))))))))))