it required viewing in university computer science departments for years to come 
(ROOT (S (NP (PRP it)) (VP (VBD required) (NP (NP (NN viewing)) (PP (IN in) (NP (NN university) (NML (NN computer) (NN science)) (NNS departments)))) (PP (IN for) (NP (NP (NNS years)) (SBAR (S (VP (TO to) (VP (VB come))))))))))
(ROOT (S (NP (PRP )) (VP (VBD ) (NP (NP (NN )) (PP (IN ) (NP (NN ) (NML (NN ) (NN )) (NNS )))) (PP (IN ) (NP (NP (NNS )) (SBAR (S (VP (TO ) (VP (VB ))))))))))